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Cobalt Blue Spinel

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GIA Certified 1.02 Carat Cobalt Blue Spinel Ring
Located in Ben Lomond, CA
This cobalt blue spinel ring features a round cut over 1 carat, offering a rare and stunning
Category

2010s American Contemporary Engagement Rings

Materials

Spinel, Diamond, White Gold, 18k Gold

GIA Certified 1.02 Carat Cobalt Blue Spinel Ring
GIA Certified 1.02 Carat Cobalt Blue Spinel Ring

GIA Certified 1.02 Carat Cobalt Blue Spinel Ring

GIL Certified 2.12 Carat Cobalt Blue Spinel from Burma No Heat
Located in Hua Hin, TH
GIL Certified 2.12 carat Cobalt Blue Spinel from Burma No Heat Dimension: 7.00 x 7.56 x 4.79 mm
Category

2010s Burmese Loose Gemstones

Materials

Spinel

GIL Certified 2.12 Carat Cobalt Blue Spinel from Burma No Heat
GIL Certified 2.12 Carat Cobalt Blue Spinel from Burma No Heat

GIL Certified 2.12 Carat Cobalt Blue Spinel from Burma No Heat

W 0.28 in D 0.19 in L 0.3 in
Gia Certified Cobalt Blue Spinel Natural 0.66ct Vivid Pear Teardrop Cut Rare Gem
By Gems and Jewels UK
Located in Birmingham, GB
Gia Certified Cobalt Blue Spinel Natural 0.66ct Vivid Pear Teardrop Cut Rare Gem GIA Certified
Category

21st Century and Contemporary More Jewelry

Materials

Spinel

Gia Certified Cobalt Blue Spinel Natural 0.66ct Vivid Pear Teardrop Cut Rare Gem
Gia Certified Cobalt Blue Spinel Natural 0.66ct Vivid Pear Teardrop Cut Rare Gem

Gia Certified Cobalt Blue Spinel Natural 0.66ct Vivid Pear Teardrop Cut Rare Gem

Cobalt Blue Spinel Ring Gem 3.07 Carat Mahenge Tanzania Oval Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Supreme 3.07-Carat Cobalt Blue Spinel – A Masterpiece for Custom Jewelry Design By Merkaba Beverly
Category

21st Century and Contemporary Tanzanian Contemporary Engagement Rings

Materials

Spinel

Cobalt Blue Spinel Ring Gem 3.07 Carat Mahenge Tanzania Oval Loose Gemstone
Cobalt Blue Spinel Ring Gem 3.07 Carat Mahenge Tanzania Oval Loose Gemstone

Cobalt Blue Spinel Ring Gem 3.07 Carat Mahenge Tanzania Oval Loose Gemstone

W 0.33 in D 0.24 in L 0.39 in
Spectra Fine Jewelry 8.46 Carat Certified Cobalt Blue Spinel Diamond Ring
By Spectra Fine Jewelry
Located in New York, NY
Presenting this magnificent 8.46-carat Cobalt Blue Spinel Ring by Spectra Fine Jewelry. Its cushion
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Diamond, Spinel, Platinum

Spectra Fine Jewelry 8.46 Carat Certified Cobalt Blue Spinel Diamond Ring
Spectra Fine Jewelry 8.46 Carat Certified Cobalt Blue Spinel Diamond Ring

Spectra Fine Jewelry 8.46 Carat Certified Cobalt Blue Spinel Diamond Ring

12.23 Carat Total Weight Bright Cobalt Blue Spinel 18 Karat White Gold Bracelet
Located in Houston, TX
bright cobalt blue spinels set in 18 karat white gold. Wear alone for a statement or layer with your
Category

21st Century and Contemporary American Tennis Bracelets

Materials

Spinel, Gold, 18k Gold, White Gold

12.23 Carat Total Weight Bright Cobalt Blue Spinel 18 Karat White Gold Bracelet
12.23 Carat Total Weight Bright Cobalt Blue Spinel 18 Karat White Gold Bracelet

12.23 Carat Total Weight Bright Cobalt Blue Spinel 18 Karat White Gold Bracelet

L 7 in
Natural Cobalt Blue spinel High quality, 2.57 Ct. Lose gemstone, Square-Cushion
By GRALJEWELRY
Located in Daugavpils, LV
Natural Cobalt Blue Spinel gemstone Laboratory certified GFCO Gemstone Color: Cobalt Blue Gemstone
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

Natural Cobalt Blue spinel High quality, 2.57 Ct. Lose gemstone, Square-Cushion
Natural Cobalt Blue spinel High quality, 2.57 Ct. Lose gemstone, Square-Cushion

Natural Cobalt Blue spinel High quality, 2.57 Ct. Lose gemstone, Square-Cushion

W 0.28 in D 0.25 in L 0.29 in
Natural Cobalt Blue spinel High quality, 2.00 Ct. Lose gemstone, Cushion cut
By GRALJEWELRY
Located in Daugavpils, LV
Natural Cobalt Blue spinel High quality, 2.00 Ct. Lose gemstone, Cushion cut, Certificate GFCO
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

Natural Cobalt Blue spinel High quality, 2.00 Ct. Lose gemstone, Cushion cut
Natural Cobalt Blue spinel High quality, 2.00 Ct. Lose gemstone, Cushion cut

Natural Cobalt Blue spinel High quality, 2.00 Ct. Lose gemstone, Cushion cut

W 0.26 in D 0.2 in L 0.29 in
GIA Certified 1.77 carats Cobalt Blue Spinel Stone Brilliant Cut Natural Gem
Located in Bangkok, TH
Shape octagon Cut Brilliant Cut This GIA Certified Cobalt Blue Spinel weighs 1.77 carats and
Category

21st Century and Contemporary Sri Lankan Modern Loose Gemstones

Materials

Spinel

GIA Certified 1.77 carats Cobalt Blue Spinel Stone Brilliant Cut Natural Gem
GIA Certified 1.77 carats Cobalt Blue Spinel Stone Brilliant Cut Natural Gem

GIA Certified 1.77 carats Cobalt Blue Spinel Stone Brilliant Cut Natural Gem

W 0.25 in D 0.18 in L 0.31 in
Bezel Set Cobalt Blue Spinel and Round Diamonds by the Yard Necklace
Located in Houston, TX
This diamond by the yard style necklace features bezel set bright blue round spinels alternating
Category

21st Century and Contemporary American Chain Necklaces

Materials

Diamond, Spinel, Gold, 14k Gold, White Gold

Bezel Set Cobalt Blue Spinel and Round Diamonds by the Yard Necklace
Bezel Set Cobalt Blue Spinel and Round Diamonds by the Yard Necklace

Bezel Set Cobalt Blue Spinel and Round Diamonds by the Yard Necklace

L 18 in
Certified Unheated Cobalt Blue Spinel with Diamond Ring in 18K White Gold
Located in Bangkok, TH
Blue Spinel 3.04 carats with Diamond 0.34 carat Ring set in 18 Karat White Gold Settings (GFCO Gem
Category

2010s Thai Contemporary Solitaire Rings

Materials

Diamond, Spinel, 18k Gold, White Gold

Certified Unheated Cobalt Blue Spinel with Diamond Ring in 18K White Gold
Certified Unheated Cobalt Blue Spinel with Diamond Ring in 18K White Gold

Certified Unheated Cobalt Blue Spinel with Diamond Ring in 18K White Gold

2.06 Carat Cobalt Blue Ceylon Spinel
Located in Hua Hin, TH
2.06 Carat Natural Cobalt Blue Spinel from Sri Lanka (Ceylon) Dimension: 7.71 x 6.30 x 5.27 mm
Category

2010s Sri Lankan Loose Gemstones

Materials

Spinel

2.06 Carat Cobalt Blue Ceylon Spinel
2.06 Carat Cobalt Blue Ceylon Spinel

2.06 Carat Cobalt Blue Ceylon Spinel

W 0.25 in D 0.21 in L 0.31 in
1.16 Carat Natural Violet Ceylon Spinel
Located in Hua Hin, TH
1.16 Carat Natural Cobalt Blue Spinel from Sri Lanka (Ceylon) Dimension: 6.86 x 5.38 x 3.54 mm
Category

2010s Sri Lankan Loose Gemstones

Materials

Spinel

1.16 Carat Natural Violet Ceylon Spinel
1.16 Carat Natural Violet Ceylon Spinel

1.16 Carat Natural Violet Ceylon Spinel

W 0.22 in D 0.14 in L 0.28 in
Spinel Cobalt Blue 3.25 Ct. Natural gemstone, Cushion, Tanzania, GFCO certified
By GRALJEWELRY
Located in Daugavpils, LV
Natural Cobalt Blue Spinel Loose gemstone Origin Tanzania! Laboratory certified GFCO Gemstone
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

Spinel Cobalt Blue 3.25 Ct. Natural gemstone, Cushion, Tanzania, GFCO certified
Spinel Cobalt Blue 3.25 Ct. Natural gemstone, Cushion, Tanzania, GFCO certified

Spinel Cobalt Blue 3.25 Ct. Natural gemstone, Cushion, Tanzania, GFCO certified

W 0.3 in D 0.21 in L 0.4 in
Spinel Cobalt Blue 3.04Ct natural gemstone, Oval cut, Tanzania, GFCO certified
By GRALJEWELRY
Located in Daugavpils, LV
Natural Cobalt Blue Spinel Loose gemstone Origin Tanzania! Laboratory certified GFCO Gemstone
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

Spinel Cobalt Blue 3.04Ct natural gemstone, Oval cut, Tanzania, GFCO certified
Spinel Cobalt Blue 3.04Ct natural gemstone, Oval cut, Tanzania, GFCO certified

Spinel Cobalt Blue 3.04Ct natural gemstone, Oval cut, Tanzania, GFCO certified

W 0.3 in D 0.22 in L 0.4 in
Natural Blue Vietnamese Cobalt Spinel Gemstone 0.54 carats with GIA Report
Located in Los Angeles, CA
beauty of nature's finest creations. Identification: Natural Vietnamese Cobalt Blue Spinel • Carat
Category

21st Century and Contemporary Vietnamese Modern Loose Gemstones

Materials

Spinel

Natural Blue Vietnamese Cobalt Spinel Gemstone 0.54 carats with GIA Report
Natural Blue Vietnamese Cobalt Spinel Gemstone 0.54 carats with GIA Report

Natural Blue Vietnamese Cobalt Spinel Gemstone 0.54 carats with GIA Report

H 0.11 in W 0.18 in L 0.25 in
Martin Mayer, Jugendstil Spinel & Diamond Gold Bar Brooch, Germany, C.1900
Located in Chatham, CA
MARTIN MAYER - Jugendstil cabochon cobalt blue Spinel (approx. .51 carats - 5 x 3.5 x 3 mm.) and
Category

Early 20th Century German Jugendstil Brooches

Materials

Diamond, Spinel, Gold, 18k Gold, Yellow Gold, Platinum

Martin Mayer, Jugendstil Spinel & Diamond Gold Bar Brooch, Germany, C.1900
Martin Mayer, Jugendstil Spinel & Diamond Gold Bar Brooch, Germany, C.1900

Martin Mayer, Jugendstil Spinel & Diamond Gold Bar Brooch, Germany, C.1900

W 0.19 in D 0.38 in L 3.25 in
Lovely Cobalt Blue Natural Spinel 1.22 Carats Spinel Gemstones Spinel Jewelry
Located in Bangkok, TH
Lovely Cobalt Blue Natural Spinel of 1.22 carats from Sri lanka has a wonderful cut in a Oval shape
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

Lovely Cobalt Blue Natural Spinel 1.22 Carats Spinel Gemstones Spinel Jewelry
Lovely Cobalt Blue Natural Spinel 1.22 Carats Spinel Gemstones Spinel Jewelry

Lovely Cobalt Blue Natural Spinel 1.22 Carats Spinel Gemstones Spinel Jewelry

1.98 Carat Natural Blue Cobalt Spinel from Burma
Located in Hua Hin, TH
1.98 Carat Natural Blue Cobalt Spinel from Burma Dimension: 7.68 x 6.35 x 5.28 mm Shape: Oval Cut
Category

2010s Burmese Loose Gemstones

Materials

Spinel

1.98 Carat Natural Blue Cobalt Spinel from Burma
1.98 Carat Natural Blue Cobalt Spinel from Burma

1.98 Carat Natural Blue Cobalt Spinel from Burma

W 0.31 in D 0.21 in L 0.25 in
GEMCOOK JEWELLERY 1.04ct Cobalt Spinel Blue Flower Ring
Located in Bangkok, TH
GEMCOOK JEWELLERY 1.04ct Cobalt Spinel Blue Flower Ring1.04ct Charming cobalt blue~ A circle of
Category

2010s Chinese Arts and Crafts Cocktail Rings

Materials

Spinel

GEMCOOK JEWELLERY 1.04ct Cobalt Spinel Blue Flower Ring
GEMCOOK JEWELLERY 1.04ct Cobalt Spinel Blue Flower Ring

GEMCOOK JEWELLERY 1.04ct Cobalt Spinel Blue Flower Ring

GIL Certified 1.91 Carat Cobalt Blue Natural Spinel from Burma
Located in Hua Hin, TH
GIL Certified 1.91 carat Cobalt Blue Natural Spinel from Burma Weight: 1.91 Carat Dimension: 7.66 x
Category

2010s Burmese Loose Gemstones

Materials

Spinel

GIL Certified 1.91 Carat Cobalt Blue Natural Spinel from Burma
GIL Certified 1.91 Carat Cobalt Blue Natural Spinel from Burma

GIL Certified 1.91 Carat Cobalt Blue Natural Spinel from Burma

W 0.31 in D 0.2 in L 0.28 in
GFCO Certified Natural 2.40Ct Blue Cobalt Spinel gemstone, Origin Tanzania.
By GRALJEWELRY
Located in Daugavpils, LV
Natural Blue Cobalt Spinel gemstone GFCO Laboratory certified Gemstone Color: Blue Gemstone Type
Category

21st Century and Contemporary Tanzanian Loose Gemstones

Materials

Spinel

GFCO Certified Natural 2.40Ct Blue Cobalt Spinel gemstone, Origin Tanzania.
GFCO Certified Natural 2.40Ct Blue Cobalt Spinel gemstone, Origin Tanzania.

GFCO Certified Natural 2.40Ct Blue Cobalt Spinel gemstone, Origin Tanzania.

W 0.27 in D 0.19 in L 0.36 in
GIL Certified 1.79 Carat Cobalt Blue Natural Spinel from Burma Untreated
Located in Hua Hin, TH
GIL Certified 1.79 Carat Cobalt Blue Natural Spinel from Burma Dimension: 7.84 x 6.32 x 4.59 mm
Category

2010s Burmese Loose Gemstones

Materials

Spinel

GIL Certified 1.79 Carat Cobalt Blue Natural Spinel from Burma Untreated
GIL Certified 1.79 Carat Cobalt Blue Natural Spinel from Burma Untreated

GIL Certified 1.79 Carat Cobalt Blue Natural Spinel from Burma Untreated

W 0.31 in D 0.19 in L 0.25 in
GFCO Certified Natural 3.51Ct Blue Cobalt Spinel gemstone, Heart cut, Tanzania
By GRALJEWELRY
Located in Daugavpils, LV
Natural Spinel gemstone GFCO Laboratory certified Gemstone Color: Blue Gemstone Type: Spinel
Category

21st Century and Contemporary Tanzanian Loose Gemstones

Materials

Spinel

GFCO Certified Natural 3.51Ct Blue Cobalt Spinel gemstone, Heart cut, Tanzania
GFCO Certified Natural 3.51Ct Blue Cobalt Spinel gemstone, Heart cut, Tanzania

GFCO Certified Natural 3.51Ct Blue Cobalt Spinel gemstone, Heart cut, Tanzania

W 0.37 in D 0.26 in L 0.32 in
Natural Blue Cobalt Spinel Loose gemstone 2.10 ct., Cushion cut, Origin Tanzania
By GRALJEWELRY
Located in Daugavpils, LV
Natural Blue Cobalt Spinel Loose gemstone from Tanzania! Laboratory certified GFCO Gemstone Color
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

Natural Blue Cobalt Spinel Loose gemstone 2.10 ct., Cushion cut, Origin Tanzania
Natural Blue Cobalt Spinel Loose gemstone 2.10 ct., Cushion cut, Origin Tanzania

Natural Blue Cobalt Spinel Loose gemstone 2.10 ct., Cushion cut, Origin Tanzania

W 0.25 in D 0.22 in L 0.29 in
14 Karat White Gold Round Natural Blue Cobalt Spinel Eternity Band
Located in Houston, TX
This 14 karat white gold eternity band features fifteen round french set bright blue natural cobalt
Category

21st Century and Contemporary North American Band Rings

Materials

Spinel, Gold, 14k Gold, White Gold

14 Karat White Gold Round Natural Blue Cobalt Spinel Eternity Band
14 Karat White Gold Round Natural Blue Cobalt Spinel Eternity Band

14 Karat White Gold Round Natural Blue Cobalt Spinel Eternity Band

Natural blue Cobalt Spinel loose gemstone 2.67 ct., heart cut, Origin Tanzania
By GRALJEWELRY
Located in Daugavpils, LV
Natural blue cobalt Spinel gemstone Laboratory certified GFCO Gemstone Color: Vivid blue Gemstone
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

Natural blue Cobalt Spinel loose gemstone 2.67 ct., heart cut, Origin Tanzania
Natural blue Cobalt Spinel loose gemstone 2.67 ct., heart cut, Origin Tanzania

Natural blue Cobalt Spinel loose gemstone 2.67 ct., heart cut, Origin Tanzania

W 0.35 in D 0.26 in L 0.31 in

Recent Sales

Grs & Gil Certified Cobalt Blue Spinel and Diamond Ring
Located in Hung Hom, HK
Among all Rare Blue Gemstones, the Cobalt Spinel possesses unique beauty factors such as sparkle
Category

2010s Tanzanian Fashion Rings

Materials

Spinel, Diamond, White Gold, 18k Gold, Gold

Grs & Gil Certified Cobalt Blue Spinel and Diamond Ring
Grs & Gil Certified Cobalt Blue Spinel and Diamond Ring

Grs & Gil Certified Cobalt Blue Spinel and Diamond Ring

18 Karat White Gold Blue Cobalt Spinel Ring with Black and White Diamonds
By Niquesa
Located in London, GB
, surrounded by a glittering pave' of black and white diamonds Details Blue Cobalt Spinel Cocktail Ring - 18
Category

21st Century and Contemporary Italian Contemporary Cocktail Rings

Materials

Black Diamond, White Diamond, Spinel, White Gold, 18k Gold

18 Karat White Gold Blue Cobalt Spinel Ring with Black and White Diamonds
18 Karat White Gold Blue Cobalt Spinel Ring with Black and White Diamonds

18 Karat White Gold Blue Cobalt Spinel Ring with Black and White Diamonds

Fantastic Cobalt Blue Spinel Gemstone 1.04 Carats Aig Certified Spinel Burma
Located in Bangkok, TH
Fantastic Cobalt Blue Spinel Gemstone, Available For Sale At Wholesale Price Natural High Quality
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

Fantastic Cobalt Blue Spinel Gemstone 1.04 Carats Aig Certified Spinel Burma
Fantastic Cobalt Blue Spinel Gemstone 1.04 Carats Aig Certified Spinel Burma

Fantastic Cobalt Blue Spinel Gemstone 1.04 Carats Aig Certified Spinel Burma

3.69 carats Cobalt Blue Spinel Stone Oval Mixed Cut Natural Tanzanian Gemstone
Located in Bangkok, TH
Cobalt Blue Spinel takes center stage, showcasing its allure through a Mixed Oval Cut. Originating from
Category

21st Century and Contemporary Tanzanian Modern Loose Gemstones

Materials

Spinel

3.69 carats Cobalt Blue Spinel Stone Oval Mixed Cut Natural Tanzanian Gemstone
3.69 carats Cobalt Blue Spinel Stone Oval Mixed Cut Natural Tanzanian Gemstone

3.69 carats Cobalt Blue Spinel Stone Oval Mixed Cut Natural Tanzanian Gemstone

W 0.36 in D 0.2 in L 0.43 in
Excellent Cobalt Blue Loose Spinel Gem 1.80 CTS Buy Spinel Gemstone Spinel Ring
Located in Bangkok, TH
Excellent Cobalt Blue Loose Spinel Gem of 1.80 carats from Sri lanka has a wonderful cut in a
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

Excellent Cobalt Blue Loose Spinel Gem 1.80 CTS Buy Spinel Gemstone Spinel Ring
Excellent Cobalt Blue Loose Spinel Gem 1.80 CTS Buy Spinel Gemstone Spinel Ring

Excellent Cobalt Blue Loose Spinel Gem 1.80 CTS Buy Spinel Gemstone Spinel Ring

Precious Cobalt Blue Natural Spinel Stone 1.05 Carats AIG Certified Spinel
Located in Bangkok, TH
Precious Cobalt Blue Natural Spinel Stone, Available For Sale At Wholesale Price Natural High
Category

21st Century and Contemporary Sri Lankan Modern Loose Gemstones

Materials

Spinel

Precious Cobalt Blue Natural Spinel Stone 1.05 Carats AIG Certified Spinel
Precious Cobalt Blue Natural Spinel Stone 1.05 Carats AIG Certified Spinel

Precious Cobalt Blue Natural Spinel Stone 1.05 Carats AIG Certified Spinel

Natural Cobalt Blue Spinel loose gemstone 3.50 ct, High quality, Origin Tanzania
By GRALJEWELRY
Located in Daugavpils, LV
Natural Cobalt Blue Spinel loose gemstone 3.50 ct., High quality, Octagon cut, Origin Tanzania
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

Natural Cobalt Blue Spinel loose gemstone 3.50 ct, High quality, Origin Tanzania
Natural Cobalt Blue Spinel loose gemstone 3.50 ct, High quality, Origin Tanzania

Natural Cobalt Blue Spinel loose gemstone 3.50 ct, High quality, Origin Tanzania

W 0.29 in D 0.21 in L 0.42 in
GIA Certified 1.51 carats Cobalt Blue Spinel Stone Step Cut Natural Gemstone
Located in Bangkok, TH
specified Shape Octagon Cut Step This GIA Certified Cobalt Blue Spinel weighs 1.51 carats and showcases
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Spinel

GIA Certified 1.51 carats Cobalt Blue Spinel Stone Step Cut Natural Gemstone
GIA Certified 1.51 carats Cobalt Blue Spinel Stone Step Cut Natural Gemstone

GIA Certified 1.51 carats Cobalt Blue Spinel Stone Step Cut Natural Gemstone

W 0.21 in D 0.17 in L 0.29 in
GIA Certified 1.50 carats Cobalt Blue Spinel Stone Step Cut Natural Gemstone
Located in Bangkok, TH
Clean Shape Octagon Cut Step This GIA Certified Cobalt Blue Spinel weighs 1.50 carats and showcases
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Spinel

GIA Certified 1.50 carats Cobalt Blue Spinel Stone Step Cut Natural Gemstone
GIA Certified 1.50 carats Cobalt Blue Spinel Stone Step Cut Natural Gemstone

GIA Certified 1.50 carats Cobalt Blue Spinel Stone Step Cut Natural Gemstone

W 0.25 in D 0.19 in L 0.26 in
Natural Cobalt Blue spinel quality VS, 3.48 Ct. gemstone, Certificate GFCO
By GRALJEWELRY
Located in Daugavpils, LV
Natural Spinel gemstone Laboratory certified Gemstone Color: Blue Gemstone Type: Spinel Gemstone
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

Natural Cobalt Blue spinel quality VS, 3.48 Ct. gemstone, Certificate GFCO
Natural Cobalt Blue spinel quality VS, 3.48 Ct. gemstone, Certificate GFCO

Natural Cobalt Blue spinel quality VS, 3.48 Ct. gemstone, Certificate GFCO

W 0.31 in D 0.23 in L 0.36 in
'The Blue Moon' - 2.69 Carat Cobalt Blue Spinel Platinum ring with VS diamonds.
Located in Hua Hin, TH
Platinum ring set with a 2.69 carat Blue Cobalt Spinel & 58pcs. Diamonds total 0.30 carat. Ring
Category

2010s Burmese Engagement Rings

Materials

Diamond, Spinel, Platinum

'The Blue Moon' - 2.69 Carat Cobalt Blue Spinel Platinum ring with VS diamonds.
'The Blue Moon' - 2.69 Carat Cobalt Blue Spinel Platinum ring with VS diamonds.

'The Blue Moon' - 2.69 Carat Cobalt Blue Spinel Platinum ring with VS diamonds.

Grace of Purplish Gray Burmese Spinel 2.35 carats Radiant Cut Natural Loose Gem
Located in Bangkok, TH
spinel grey spinel jedi spinel cobalt blue spinel spinel rock natural spinel
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

Grace of Purplish Gray Burmese Spinel 2.35 carats Radiant Cut Natural Loose Gem
Grace of Purplish Gray Burmese Spinel 2.35 carats Radiant Cut Natural Loose Gem

Grace of Purplish Gray Burmese Spinel 2.35 carats Radiant Cut Natural Loose Gem

W 0.27 in D 0.21 in L 0.34 in
Natural Spinel Cobalt blue Loose Gemstone 2.04 Ct., Certificate, cushion cut.
By GRALJEWELRY
Located in Daugavpils, LV
Natural Spinel Cobalt blue Loose Gemstone 2.04 Ct., Certificate, cushion cut. Origin Tanzania
Category

2010s Tanzanian Loose Gemstones

Materials

Spinel

Natural Spinel Cobalt blue Loose Gemstone 2.04 Ct., Certificate, cushion cut.
Natural Spinel Cobalt blue Loose Gemstone 2.04 Ct., Certificate, cushion cut.

Natural Spinel Cobalt blue Loose Gemstone 2.04 Ct., Certificate, cushion cut.

W 0.24 in D 0.2 in L 0.33 in
Edwardian AGL Certified Cobalt Blue Spinel Diamond Natural Pearl Necklace
Located in Sarasota, FL
blue, natural Cobalt Spinel , large pear shape natural Pearl and approximately 2.00 carats of fine old
Category

Early 20th Century Edwardian More Necklaces

Materials

Diamond, Pearl, Spinel, 18k Gold

Edwardian AGL Certified Cobalt Blue Spinel Diamond Natural Pearl Necklace
Edwardian AGL Certified Cobalt Blue Spinel Diamond Natural Pearl Necklace

Edwardian AGL Certified Cobalt Blue Spinel Diamond Natural Pearl Necklace

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63.70 Carats Huge Natural Seafoam Blue Aquamarine Loose Gemstone March Birthday
Located in Peshawar, PK
Faceted Aquamarine Weight: 63.70 Carats Dimension: 26X20X17.9 Mm Origin: Madagascar Africa Color: Blue Shape: Oval Cut: Brilliant Certificate: On Customer Demand Treatment: Non ...
Category

21st Century and Contemporary Malagasy Arts and Crafts Loose Gemstones

Materials

Amethyst, Aquamarine

63.70 Carats Huge Natural Seafoam Blue Aquamarine Loose Gemstone March Birthday
63.70 Carats Huge Natural Seafoam Blue Aquamarine Loose Gemstone March Birthday

63.70 Carats Huge Natural Seafoam Blue Aquamarine Loose Gemstone March Birthday

W 0.79 in D 0.71 in L 1.03 in
NWT $843, 300 18KT Gold Rare Large 20CT Ceylon Blue Sapphire Diamond Ring
Located in New York, NY
The Following Item we are offering is a Rare Important Spectacular and Brilliant 18KT Gold Large Gorgeous Sapphire Diamond Ring. Ring consists of a Rare Fine Magnificent Rare Natural...
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Blue Sapphire, Gold

NWT $843, 300 18KT Gold Rare Large 20CT Ceylon Blue Sapphire Diamond Ring
NWT $843, 300 18KT Gold Rare Large 20CT Ceylon Blue Sapphire Diamond Ring

NWT $843, 300 18KT Gold Rare Large 20CT Ceylon Blue Sapphire Diamond Ring

2.35 carats Metallic Gray Burmese Spinel Stone Emerald Cut Natural Gemstone
Located in Bangkok, TH
Weight 2.35 carats Dimensions 8.0x6.2x5.1 mm Treatment None Clarity VVS Origin Burma Shape Octagon Cut Emerald The 2.35-carat Metallic Gray Burmese Spinel Stone is a captivating...
Category

21st Century and Contemporary Burmese Modern Loose Gemstones

Materials

Spinel

2.35 carats Metallic Gray Burmese Spinel Stone Emerald Cut Natural Gemstone
2.35 carats Metallic Gray Burmese Spinel Stone Emerald Cut Natural Gemstone

2.35 carats Metallic Gray Burmese Spinel Stone Emerald Cut Natural Gemstone

W 6.2 in D 5.1 in L 8 in
GIA Certified 5.19 Carat Burmese Ruby and Diamond Ring
By GEMME
Located in New York, NY
Oval shaped Burmese Ruby weighing 5.19 Carats surrounded by 10 Oval shaped Diamonds weighing 3.01 Carats. Ruby certified by GRS as Burma, heated. Diamonds are all certified as D col...
Category

2010s American Cocktail Rings

Materials

Diamond, Ruby, Platinum

GIA Certified 5.19 Carat Burmese Ruby and Diamond Ring
GIA Certified 5.19 Carat Burmese Ruby and Diamond Ring

GIA Certified 5.19 Carat Burmese Ruby and Diamond Ring

Silver Gray Natural Spinel Gemstone 1.80 Spinel Gemstone Loose Spinel
Located in Bangkok, TH
Silver Gray Natural Spinel Gemstone of 1.80 Carats from Burma has a wonderful cut in a Cushion shape, incredible Silver,Gray Color. Great brilliance. This gem is SI Clarity. Product...
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Spinel

Silver Gray Natural Spinel Gemstone 1.80 Spinel Gemstone Loose Spinel
Silver Gray Natural Spinel Gemstone 1.80 Spinel Gemstone Loose Spinel

Silver Gray Natural Spinel Gemstone 1.80 Spinel Gemstone Loose Spinel

W 0.25 in D 0.19 in L 0.31 in
4.90 Carat Blue Spinel Cushion, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
This pretty blue spinel cushion weighs 4.90 carats and would make a beautiful 3-stone ring, though its shape lends itself to a variety of possibilities! It measures 11.13 x 8.86 x 6....
Category

21st Century and Contemporary American Artisan Loose Gemstones

Materials

Spinel

4.90 Carat Blue Spinel Cushion, Unset Loose Gemstone, GIA Certified
4.90 Carat Blue Spinel Cushion, Unset Loose Gemstone, GIA Certified

4.90 Carat Blue Spinel Cushion, Unset Loose Gemstone, GIA Certified

Natural 11.56 Carat 'Ocean Blue' Zircon from Cambodia
Located in Hua Hin, TH
Absolutely Ravishing Octagon Ocean Blue Zircon Rare sparkling Blue Zircon is only found at one place in the world at Ratanakiri province in Northeast Cambodia. Blue Zircon in this vi...
Category

2010s Cambodian Loose Gemstones

Materials

Zircon, Blue Zircon

Natural 11.56 Carat 'Ocean Blue' Zircon from Cambodia
Natural 11.56 Carat 'Ocean Blue' Zircon from Cambodia

Natural 11.56 Carat 'Ocean Blue' Zircon from Cambodia

W 0.32 in D 0.31 in L 0.55 in
GIA 4.09ct Asscher Cut Diamond Engagement Ring, Sapphire Halo, G Color, and VS1
Located in New York, NY
This exceptional platinum and sapphire halo ring is a true rarity, showcasing a GIA-certified antique Asscher cut diamond weighing 4.09 carats, with G color and VS1 clarity. The exqu...
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

GIA 4.09ct Asscher Cut Diamond Engagement Ring, Sapphire Halo, G Color, and VS1
GIA 4.09ct Asscher Cut Diamond Engagement Ring, Sapphire Halo, G Color, and VS1

GIA 4.09ct Asscher Cut Diamond Engagement Ring, Sapphire Halo, G Color, and VS1

Natural 1.58 Carat Metallic Blue Zircon
Located in Hua Hin, TH
A beautiful sparkling Pear shaped 'Metallic Blue' Zircon from Ratanakiri, Cambodia. Dimension: 7.03 x 6.01 x 3.96 mm Traditional Heat Treatment Rare sparkling Blue Zircon is only f...
Category

2010s Cambodian Loose Gemstones

Materials

Zircon, Blue Zircon

Natural 1.58 Carat Metallic Blue Zircon
Natural 1.58 Carat Metallic Blue Zircon

Natural 1.58 Carat Metallic Blue Zircon

W 0.24 in D 0.16 in L 0.28 in
Stunning Deep London Blue Topaz 18.25 Carats Topaz Gemstone Mystic Topaz
Located in Bangkok, TH
Stunning Deep London Blue Topaz, available for sale at wholesale price, natural high-quality 18.25 carats Loop Clean clarity, certified topaz from Africa. Product Information: GEMS...
Category

21st Century and Contemporary South African Modern Loose Gemstones

Materials

Topaz, Blue Topaz

Stunning Deep London Blue Topaz 18.25 Carats Topaz Gemstone Mystic Topaz
Stunning Deep London Blue Topaz 18.25 Carats Topaz Gemstone Mystic Topaz

Stunning Deep London Blue Topaz 18.25 Carats Topaz Gemstone Mystic Topaz

W 0.58 in D 0.4 in L 0.72 in
1.74 Carat Violet Spinel Lotus Certified
Located in Hua Hin, TH
1.74 Carat Violet Spinel Shape: Oval Cutting Style: Faceted Brilliant Step Dimensions: 7.72 x 7.06 x 4.63 mm Color: Violet medium saturation with a medium-light tone Weight: 1.74 Ca...
Category

2010s Unknown Loose Gemstones

Materials

Spinel

1.74 Carat Violet Spinel Lotus Certified
1.74 Carat Violet Spinel Lotus Certified

1.74 Carat Violet Spinel Lotus Certified

W 0.31 in D 0.19 in L 0.28 in
Luxury Tanzanite and Diamond Engagement Ring By Merkaba Jewelry Beverly Hills
By Merkaba
Located in Beverly Hills, CA
Classic 3.57-Carat Tanzanite Emerald Cut Platinum Diamond Engagement Ring – A Masterpiece of Love & Transformation By Merkaba Beverly Hills. There are moments in life when words are...
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Multi-gemstone, Tanzanite, Alexandrite, Blue Dia...

Luxury Tanzanite and Diamond Engagement Ring By Merkaba Jewelry Beverly Hills
Luxury Tanzanite and Diamond Engagement Ring By Merkaba Jewelry Beverly Hills

Luxury Tanzanite and Diamond Engagement Ring By Merkaba Jewelry Beverly Hills

Rubellite Tourmaline Ring 3.92 Carat Oval - Romantic Best Gift Beverly Hills
By Merkaba
Located in Beverly Hills, CA
Supreme 3.92 Carat Rubelite Tourmaline Oval Platinum Ring – Merkaba Jewelry Beverly Hills Presenting the Supreme 3.92 carat Rubelite Tourmaline Oval Platinum Ring, an exquisite mast...
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Tourmaline, Rubelite, Multi-gemstone, White Diamond, Diamond, Platinum

Rubellite Tourmaline Ring 3.92 Carat Oval - Romantic Best Gift Beverly Hills
Rubellite Tourmaline Ring 3.92 Carat Oval - Romantic Best Gift Beverly Hills

Rubellite Tourmaline Ring 3.92 Carat Oval - Romantic Best Gift Beverly Hills

Rare Gray Blue Spinel Ring 4.15 Carat Round - Merkaba Fine Jewelry Beverly Hills
By Merkaba
Located in Beverly Hills, CA
Ultra Exclusive 4.15-Carat Grey-Blue "Ceylon" Spinel Platinum Ring By Merkaba Jewelry Beverly Hills. Step into the world of timeless elegance with this ultra-exclusive 4.15-carat Gr...
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, White Diamond, Multi-gemstone, Spinel, Platinum

Rare Gray Blue Spinel Ring 4.15 Carat Round - Merkaba Fine Jewelry Beverly Hills
Rare Gray Blue Spinel Ring 4.15 Carat Round - Merkaba Fine Jewelry Beverly Hills

Rare Gray Blue Spinel Ring 4.15 Carat Round - Merkaba Fine Jewelry Beverly Hills

3.92 Carat Violet Spinel from Burma 'Myanmar' Lotus Certified
Located in Hua Hin, TH
3.92 Carat Violet Spinel from Burma (Myanmar) Shape: Cushion Cut Dimensions: 10.72 x 7.78 x 5.95 mm No Heat or treatment GIL certified: STO2022102451317
Category

2010s Burmese Loose Gemstones

Materials

Spinel

3.92 Carat Violet Spinel from Burma 'Myanmar' Lotus Certified
3.92 Carat Violet Spinel from Burma 'Myanmar' Lotus Certified

3.92 Carat Violet Spinel from Burma 'Myanmar' Lotus Certified

W 0.43 in D 0.24 in L 0.31 in
1.64 Carat Natural Purple Spinel from Burma No Heat
Located in Hua Hin, TH
1.64 Carat Natural Purple Spinel from Burma Dimension: 8.37 x 5.91 x 3.52 mm Weight: 1.64 Carat Shape: Octagon Cut No Heat GIL Certified Report No; STO2022102151331
Category

2010s Burmese Loose Gemstones

Materials

Spinel

1.64 Carat Natural Purple Spinel from Burma No Heat
1.64 Carat Natural Purple Spinel from Burma No Heat

1.64 Carat Natural Purple Spinel from Burma No Heat

W 0.33 in D 0.14 in L 0.24 in
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Cobalt Blue Spinel For Sale on 1stDibs

You are likely to find exactly the cobalt blue spinel you’re looking for on 1stDibs, as there is a broad range for sale. Every item for sale was constructed with extraordinary care, often using 18k gold, gold and platinum. For this particular accessory, there are many different carat weights to choose from, but 1.5 carat and 2 carat versions are of considerable interest. Finding an appealing cobalt blue spinel — no matter the origin — is easy, but Merkaba each produced a popular version that is worth a look. An oval cut version of this piece has appeal, but there are also antique cushion cut and octagon cut versions for sale. When shopping for a cobalt blue spinel, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a Cobalt Blue Spinel?

The price for a cobalt blue spinel starts at $300 and tops out at $9,900 with these rings, on average, selling for $590.
Questions About Cobalt Blue Spinel
  • What is cobalt spinel?
    1 Answer
    1stDibs ExpertApril 5, 2022
    Cobalt blue spinels are the rarest and most valued type of spinel gemstone. They’re very popular in the modern gem industry and sought after by collectors. On 1stDibs, you’ll find a collection of cobalt spinel jewelry from some of the world’s top sellers.
  • How can I identify a cobalt Spinel?
    1 Answer
    1stDibs ExpertApril 5, 2022
    True cobalt Spinel have a high-quality blue coloring that won’t glow under a UV light. For detailed analysis, consult a jeweler. Shop a collection of expertly-vetted cobalt spinel jewelry from some of the world’s top sellers on 1stDibs.
  • Why is cobalt spinel expensive?
    1 Answer
    1stDibs ExpertApril 5, 2022
    Cobalt spinel is typically an expensive gemstone because it is rare. The gemstones feature a highly saturated blue color that sets them apart from other varieties of spinel. You can shop a selection of cobalt spinel gemstone jewelry on 1stDibs.
  • Is a cobalt spinel gem rare?
    1 Answer
    1stDibs ExpertApril 5, 2022
    Yes, the cobalt spinel gem is extremely rare and is one of the most desirable gems in the industry. It is found in a single mine in Vietnam and is one of the few gems that occur naturally. Shop a collection of expertly vetted gems from some of the world’s top sellers on 1stDibs.
  • Is all blue glass cobalt?
    1 Answer
    1stDibs ExpertApril 5, 2022
    No, not all blue glass is cobalt glass. Only those made with cobalt oxide can be called cobalt. In some pieces, the presence of copper oxide accounts for the color, however, cobalt glass is much more common. You'll find a collection of cobalt glass on 1stDibs.
  • How can I tell if a glass is cobalt blue?
    1 Answer
    1stDibs ExpertApril 5, 2022
    Cobalt blue glass is a deep blue glass that often gets its color by the addition of cobalt oxide in the molten glass mixture when the glass is being formed. The best way to identify cobalt blue glass is by the color. Shop a collection of cobalt blue glass from some of the world’s top sellers on 1stDibs.
  • How do you identify cobalt blue glass?
    1 Answer
    1stDibs ExpertApril 5, 2022
    If your glass has a blue tint to it, it is likely cobalt blue glass. There are three shades of cobalt glass; dark cobalt, which has a slight purplish hue, light or cornflower blue and medium blue. To verify its authenticity, check with an appraiser. You can also shop a collection of cobalt blue glass from some of the world’s top sellers on 1stDibs.
  • How old is cobalt blue glass?
    1 Answer
    1stDibs ExpertApril 5, 2022
    How old cobalt glass is varies greatly. Ancient Mesopotamian examples exist from roughly 2000 BC. In China, cobalt glass became common during the Zhou Dynasty, which lasted from 1122 to 221 BC. European cobalt glass may date back to as early as the 15th century. Shop a collection of antique cobalt glass on 1stDibs.
  • Does cobalt make glass blue?
    1 Answer
    1stDibs ExpertApril 5, 2022
    Yes, cobalt oxide makes glass blue. Different amounts of cobalt can be used to create more saturated levels of blue or to simply neutralize yellow for a more clear finish. Copper oxide can also be used to create a blue tinted glass. Shop a collection of cobalt glass from some of the world’s top sellers on 1stDibs.