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Brilliant Cut Diamond 3 Carat Gold Brooch
Located in Cairo, EG
Art Deco era 1920s brooch in open work style with an estimate brilliant cut diamond weight 3 carats
Category

Vintage 1920s Art Deco Brooches

.3 Carat Diamond Blue Enamel Yellow Gold Turtle Brooch
Located in Stamford, CT
Blue enamel Turtle brooch in 18k yellow gold with a bright full cut Diamond eye. 1 round full cut
Category

Mid-20th Century Brooches

Materials

Diamond, Gold, 18k Gold, Yellow Gold, Enamel

Vintage 4 Carats Diamond 3 Carat Emerald Gold Brooch
Located in Cairo, EG
Vintage 18k yellow and white gold large brooch with an estimate brilliant diamond weight of 4
Category

Vintage 1960s Brooches

Gubelin 3 carat sapphire diamond 18k yellow gold brooch
Located in Beverly Hills, CA
approximately 3 carats, accented by 54 single cut diamonds totaling approximately 0.70 carats, G color, VS-SI
Category

Vintage 1960s Modern Brooches

Materials

Diamond, Sapphire, Gold, 18k Gold, Yellow Gold, Platinum

3 Carat Diamond and Sapphire Ribbon Platinum Brooch. Circa 1930
Located in Bay Harbor Islands, FL
Diamond and Sapphire Ribbon Platinum Brooch featuring 126 mix cut diamonds with an approximate
Category

Vintage 1930s Brooches

Materials

Diamond, Platinum

Antique Georgian Floral Brooch Featuring 3 Carats DTW of Antique Diamonds
Located in Montgomery, AL
and SI2 in clarity. This antique brooch features approximately three carats of old mine cut diamonds
Category

Antique Early 19th Century Georgian Brooches

Materials

White Diamond, Gold, 14k Gold, White Gold, Platinum, Sterling Silver

Victorian 3 Carat Rose Cut Diamond Crescent Gold Brooch
Located in Cairo, EG
Antique victorian era 1850s crescent brooch in 18k gold with large rose cut diamonds in full facets
Category

Antique 1850s Brooches

French Art Deco 3 carat total weight diamond platinum bar brooch
Located in Beverly Hills, CA
1930s. Center stone: 19 old European cut diamonds Weight: Approximately 3 carats Color: I Clarity: VS
Category

Vintage 1930s Art Deco Brooches

Materials

Diamond, Gold, 18k Gold, White Gold, Platinum

18K White Gold 1 3/5 Carat Pave Set Diamond Tulip Brooch Pin
Located in New York, NY
array of 130 round diamonds, totaling 1 3/5 carats. The diamonds, with a mesmerizing H-I color and VS1
Category

21st Century and Contemporary American Contemporary Brooches

Materials

Diamond, White Diamond, 18k Gold, White Gold

Erte .3 Carat Diamond Yellow Gold Sterling Silver Mother of Pearl Onyx Brooch
By Erté
Located in Stamford, CT
, Mother of pearl and diamond brooch. Elegance blooms in every detail. 4 round brilliant cut diamonds. The
Category

Late 20th Century Brooches

Materials

Diamond, Onyx, Pearl, Gold, 14k Gold, Yellow Gold, Sterling Silver

18K Gold 1/3 Carat Diamond, Tourmaline & Peridot Flower & Leaf Tulip Brooch Pin
Located in New York, NY
Crafted to perfection, this brooch pin is a stunning portrayal of a lifelike flower. The stem
Category

21st Century and Contemporary American Contemporary Brooches

Materials

Diamond, Peridot, Tourmaline, 18k Gold, White Gold

Art Deco 3 Carat Diamond Platin Gold Bar Brooch Pin, circa 1930
Located in Goettingen, DE
Art Deco 3 Carat Diamond 18K White Gold Bar Brooch Pin, circa 1930 Impressive 3,78 inch (9.6 cm
Category

Vintage 1920s German Art Deco Brooches

Materials

Diamond, 18k Gold, White Gold, Platinum

Art Deco brooch in platinum and Diamonds 2 to 3 Carats 1910 1920
Located in Paris, FR
Barrette brooch in platinum setting 25 old-cut and half-cut diamonds between 2 and 3 carats of
Category

Vintage 1910s French Brooches

Materials

Diamond, Platinum

19th Century 3, 90 Carats Diamonds Bouquet Silver 18 Karat Yellow Gold Brooch
Located in Poitiers, FR
pump. Total weight of the 2 main diamonds : 1 carat approximately. Total weight of the other diamonds
Category

Antique 19th Century French Napoleon III Brooches

Materials

Diamond, White Diamond, Gold, 18k Gold, Yellow Gold, Silver

Victorian Sapphire Rose Cut Diamond 3-Dimensnional Swan Brooch
Located in Narberth, PA
A magnificent sapphire and diamond swan pin from the Victorian (ca1880) era! Crafted in sterling
Category

Antique 1880s Victorian Brooches

Materials

Diamond, Sapphire, 15k Gold, Sterling Silver

18K Yellow Gold 3/8 Cttw Diamond and 6 3/4 Cttw Red Ruby Bumblebee Brooch Pin
Located in New York, NY
, unblemished continuity. The wings dazzle with 3/8 carats of natural diamonds, pave-set in rhodium plated gold
Category

21st Century and Contemporary Indian Modern Brooches

Materials

White Diamond, Ruby, Diamond, 18k Gold, Yellow Gold

18K Yellow Gold1/3 Cttw Diamond Scottish Terrier Brooch Pin and Pendant
Located in New York, NY
, doubling as a pendant for versatility in style. This piece, adorned with a third carat of natural diamonds
Category

21st Century and Contemporary Indian Modern Brooches

Materials

White Diamond, 18k Gold, Yellow Gold

18K White Gold 3/5ct Diamond & Cultured South Sea Black & White Pearl Brooch Pin
Located in New York, NY
This diamond brooch represents a harmonious fusion of exquisite design and natural beauty. It
Category

21st Century and Contemporary American Contemporary Brooches

Materials

Diamond, White Diamond, Pearl, 18k Gold, White Gold

Filigree Deco Platinum 3 Carat Tw Diamond Pin GIA
Located in Big Bend, WI
Art Deco platinum diamond filigree pin brooch with just over 3 carats of diamonds. This is a large
Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Platinum

18K 2 3/4 Cttw Diamond and Emerald Dangle Art Deco Shield Brooch Pin Pendant
Located in New York, NY
round and marquise cut, accumulating a lavish 2 3/4 carats. Each diamond, boasting G-H color and VS1-VS2
Category

21st Century and Contemporary Indian Modern Brooches

Materials

White Diamond, Emerald, Diamond, 18k Gold, White Gold

18K Yellow Gold 3/8 Cttw Diamond & 5 1/3ct Yellow Sapphire Bumblebee Brooch Pin
Located in New York, NY
luxurious 18K yellow gold. With wings that shimmer with 3/8 carats of pave-set diamonds, radiantly plated in
Category

21st Century and Contemporary Thai Modern Brooches

Materials

White Diamond, Sapphire, Diamond, Yellow Sapphire, 18k Gold, Yellow Gold

18K 2 3/4 Cttw Diamond and 12.5 MM Cultured Freshwater Pearl Floral Brooch Pin
Located in New York, NY
diamonds that dazzle with a total weight of 2 3/4 carats. These resplendent gems boast G-H color and VS1
Category

21st Century and Contemporary Indian Modern Brooches

Materials

White Diamond, Diamond, Freshwater Pearl, 18k Gold, White Gold

18K Yellow Gold 3/8 Cttw Diamond & 5 4/5 Cttw Blue Sapphire Bumblebee Brooch Pin
Located in New York, NY
Elevate your ensemble with the enchanting charm of this bumblebee brooch, impeccably crafted from
Category

21st Century and Contemporary Indian Modern Brooches

Materials

White Diamond, Sapphire, Diamond, Blue Sapphire, 18k Gold, Yellow Gold

18K Yellow Gold and 3/5 Cttw Diamond Bow Pin Brooch (G-H Color, VS1-VS2 Clarity)
Located in New York, NY
cluster of natural diamonds totaling approximately 3/5 carat. Each diamond, selected for its G-H color and
Category

21st Century and Contemporary American Modern Brooches

Materials

White Diamond, Diamond, 18k Gold, Yellow Gold

Cartier 18k Yellow Gold Diamond Elephant Brooch
By Cartier
Located in New York, NY
pave diamonds of E-F color VVS-VS clarity, approx. 3 carats in diamond weight. The brooch is fastened
Category

20th Century French Modern Brooches

Materials

Diamond, 18k Gold, Yellow Gold

Retro Gold Vintage Brooche 3 Carat Natural Ruby and Diamond Gem Stone circa 1960
Located in Los Angeles, CA
Retro Gold Brooche 3 Carat (approximately) Natural Ruby & Diamond Circa 1960. The two natural
Category

Vintage 1960s Unknown Retro Brooches

Materials

Diamond, Ruby, Gold

18K Yellow Gold 2 1/3 Cttw Diamond Treated Sapphire and Emerald Dog Necklace
Located in New York, NY
-enhanced sapphires. This versatile creation, amassing 2 1/3 cttw, doubles as a brooch, adding a splash of
Category

21st Century and Contemporary Indian Modern Brooches

Materials

White Diamond, Sapphire, Diamond, Emerald, 18k Gold, Yellow Gold

3 Carats Diamonds and Emeralds Antique Brooch
Located in Saint-Ouen, FR
A lovely antique brooch, European made circa 1910. Made in rose gold and set with approximately 3
Category

Vintage 1910s French Belle Époque Brooches

Materials

Diamond, Emerald

3 Carat Blue Sapphire 1.20 Carat Diamond White 18 Karat Gold Brooch Italy, 1960s
Located in firenze, IT
Beautiful hand crafted white 18 k gold, with 3 carat natural blue saphire and 1.20 carat diamonds
Category

Vintage 1960s Italian Artisan Brooches

Materials

Blue Sapphire, 18k Gold

Retro Two Tone Diamond Pink Sapphire Brooch 3 Carats Karat Gold 22.5 Grams
By Harbor Diamonds
Located in New York, NY
One Retro brooch featuring round pink Sapphires weighing approxiately 3 carats and two round
Category

Vintage 1950s Retro Brooches

Materials

Pink Sapphire, Diamond, Gold, 14k Gold, Rose Gold

Herbert Rosenthal Large Diamond Gold Bee Brooch 3 Carats
By Herbert Rosenthal
Located in Chicago, IL
Circa 1980s Herbert Rosenthal 18K Yellow Gold and Diamond Bee Brooch, measuring 1 1/8 inch in
Category

Vintage 1980s American Brooches

Materials

Diamond, Ruby, 18k Gold

3 Carat Briolette Diamond Gold Flower Brooch Pin
Located in Napoli, NA
Briolette cut Diamond of 3 carat, graded G Color Vvs1 Same manufacture and age of the very famous old
Category

Mid-20th Century Italian Brooches

Materials

Diamond, 18k Gold

Art Deco 3, 50 carat Diamond Gold Brooch
Located in Napoli, NA
White Gold GEM STONE: Diamond 3.50 total carats DESIGN ERA: Art Deco MEASURES: wide 2,20 inches
Category

Mid-20th Century Art Deco Brooches

Materials

Diamond, 18k Gold

Dragonfly Brooch in 14 Karat White Gold with 3 Carat in Diamonds
Located in Surfside, FL
brooch with 3 carats full cut round brilliant diamonds & 1.5 carats in round sapphires. Diamonds estimate
Category

20th Century Romantic Brooches

Materials

Diamond, Sapphire, White Gold, 14k Gold

Dragonfly Brooch with 3 Carats Diamonds 'G-H Color, VS Clarity' and 1.5 Carat
Located in Surfside, FL
One of a kind, hand crafted dragon fly brooch with 3 carats full cut round brilliant diamonds & 1.5
Category

20th Century Brooches

Materials

White Gold

Antique Victoria Era Diamond 3 Carat Floral Brooch 2.25 Inch Eighteen Karat Gold
Located in New York, NY
An antique Victorian-era bouquet floral brooch with array of old European old mine-cut diamonds
Category

Antique Mid-19th Century French Victorian Brooches

Materials

Diamond, Gold, 14k Gold, 18k Gold, Rose Gold, White Gold

Victorian 3 Carats Rose Cut Diamonds Crescent Pin Pendant
Located in Narberth, PA
A spectacular diamond crescent moon pin & pendant from the Victorian era (ca1880)! Made of 15kt
Category

Antique 1880s Victorian Brooches

Materials

Diamond, 15k Gold, Sterling Silver

Victorian Emerald Diamond Gold Bird Brooch
Located in Beverly Hills, CA
Antique Victorian exotic bird brooch featuring 3 carats of diamonds. In silver and 14k yellow gold
Category

Antique Late 19th Century Unknown Victorian Brooches

Materials

Diamond, 14k Gold

Merin 3 Dimensional Mesh Ruby Emerald Diamond Flower Pin
Located in Stamford, CT
Vintage Merin 18k 3 Dimensional Mesh Ruby Emerald Diamond Flower Pin Original handmade Merin 18k
Category

Vintage 1950s Modern Brooches

Materials

Diamond, Emerald, Ruby, Yellow Gold, 18k Gold

1970s Diamond 3 carat Leaves Gold Brooch/Pendant
Located in Napoli, NA
1970 It featuring a leaves motif and is set with 3 carat of sparkling round cut Diamonds, graded G
Category

Late 20th Century Italian Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold

22 Carat Emerald 3 Carat Diamonds Ring Pendant Brooch Transformer Platinum, 1945
Located in Herzelia, Tel Aviv
Ring transformer to Pendant or Brooch in Platinum with 22 Ct Cabochon Emerald and 17 round-cut
Category

Mid-20th Century Cocktail Rings

Materials

Diamond, Emerald, Platinum

Antique Edwardian 3 Carat Diamond Pendant Brooch Platinum Vintage Fine Jewelry
Located in Torrance, CA
. The pendant is set with old mine cut diamonds that total an estimated 3 carats. The larger center set
Category

Early 20th Century Unknown Edwardian Pendant Necklaces

Materials

Diamond, White Diamond, Platinum

Antique Edwardian 3 Carat Diamond Pendant Brooch Platinum Vintage Fine Jewelry
Located in Torrance, CA
. The pendant is set with old mine cut diamonds that total an estimated 3 carats. The larger center set
Category

Early 20th Century Unknown Edwardian Pendant Necklaces

Materials

Diamond, Platinum

Antique Old European Cut Diamonds Platinum Brooch. Over 3 carats of diamonds
Located in Beverly Hills, CA
Looking to make a statement? This antique diamond brooch pin is a sure win! Over 3 carats of old
Category

Vintage 1920s Unknown Art Deco Brooches

Materials

Diamond, White Diamond, Gold, Platinum

Antique Victoria Era 3 Carat Diamond Floral Brooch 2.25 Inch Eighteen Karat Gold
Located in New York, NY
The Antique Old Mine Cut Diamonds, weighing 3 carat, Floral Brooch is a beautiful piece of jewelry
Category

Antique Mid-19th Century French Victorian Brooches

Materials

Diamond, Gold, 18k Gold, Rose Gold, White Gold, Platinum

Edwardian 3 Carat Diamond 2 Carat Sapphire 3.5 Carat Spinel Beetle Pin
Located in New York, NY
3 carats of diamonds, 2 carats of sapphires, and 3.5 carats of spinels, all set in luxurious 18K
Category

Antique Mid-19th Century Edwardian Brooches

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Spinel, 18k Gold

1920s 3 Carat Total Diamond Platinum Fur Clips
Located in Hicksville, NY
Diamond Details: Cut: Baguettes & Rounds Carat: 3 Carat Total Color: G Clarity: VS Clip Details
Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Platinum

'3/4 Carat' .65 Carat Diamond and Emerald Eye Honey Bee Pin in 18 Karat Gold
By Five Star Jewelry
Located in Austin, TX
of .65 carats total diamond weight. The diamonds are top quality, VS clarity and E-F Color! The eyes
Category

20th Century Brooches

Materials

Diamond, Emerald, 18k Gold

Art Deco Diamond & Sapphire Brooch, 3 Carats, Platinum
Located in New York, NY
A danity Deco clip containing one round cut diamond, approximately 0.77 carats surrounded with
Category

Early 20th Century Art Deco Brooches

Materials

Diamond, Sapphire, Platinum

Antique Victorian Era 18K Gold 3 Carats Diamond Flower Brooch
Located in Versailles, FR
mine cut diamonds inside of the flower, totalling an estimated weight of 2 carats. The brooch is
Category

Antique 19th Century French Victorian Brooches

Materials

Diamond, 18k Gold

9 Karat Platinum Diamond Opal Pin Brooch Yellow Gold White 3 Carat
Located in Boca Raton, FL
This is an heirloom quality Opal and Diamond Brooch convertible to a Pendant from the Edwardian
Category

20th Century Unknown Retro Brooches

Materials

Diamond, Opal, 9k Gold, Platinum

Tiffany & Co. ​Gold & Aquamarine 3-Flower Brooch
By Tiffany & Co.
Located in Greenwich, CT
3-flower pin, the flowers with oval-shaped aquamarine petals and centering on a circular-cut
Category

20th Century American Brooches

Materials

Aquamarine, Diamond, 14k Gold, Yellow Gold

Art Deco Diamond Flower Pin, 3 Carats, Platinum
Located in New York, NY
approximately 3 carats, crafted in platinum.
Category

Early 20th Century Brooches

Materials

Diamond, Platinum

Cartier 18k Flower Brooch
By Cartier
Located in Los Angeles, CA
Lovely Cartier 18 karat yellow gold, 3 diamond brooch. 0.15 carats in diamonds. Signed "Italy 18k
Category

Italian Brooches

Victorian 3 Carat Old Mine Cut Diamond Star Brooch and Pendant, circa 1880
Located in Lancashire, Oldham
A wonderful Victorian diamond star or otherwise known as a ‘sunburst’ brooch dating from the late
Category

Antique Late 19th Century English Victorian Brooches

Materials

Diamond, Gold, 18k Gold, Yellow Gold, Silver

Victorian 3 Carat Diamond Bow Pin
Located in Agoura Hills, CA
with 3 carats of old mine cut diamonds. Color: G-H, Clarity: VS-SI Measurements: 1 7/8" W x 1 1/2" H
Category

Antique Late 19th Century Brooches

Materials

Diamond, 14k Gold, Platinum

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3 Carat Brooch Diamond For Sale on 1stDibs

On 1stDibs, you can find the most appropriate 3 carat brooch diamond for your needs in our varied inventory. Every item for sale was constructed with extraordinary care, often using Gold, 18k Gold and Platinum. In our selection of items, you can find a vintage example as well as a contemporary version. If you’re looking for a 3 carat brooch diamond from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 18th Century while another version may have been produced as recently as the 21st Century. For this particular accessory, there are many different carat weights to choose from, but .5 Carat and 1 Carat versions are of considerable interest. Creating a 3 carat brooch diamond has been a part of the legacy of many jewelers, but those produced by Tiffany & Co., Van Cleef & Arpels and Cartier are consistently popular. See these pages for a round cut iteration of this accessory, while there are also old european cut cut and old mine cut cut versions available here, too. There aren’t many items for men if you’re seeking a 3 carat brooch diamond, as most of the options available are for women and unisex.

How Much is a 3 Carat Brooch Diamond?

The price for a 3 carat brooch diamond starts at $159 and tops out at $985,000 with these brooches, on average, selling for $5,997.

Why Gold Shines in Jewelry Craftsmanship

Gold is the feel-good metal, the serotonin of jewelry. Wear vintage and antique gold necklaces, watches, gold bracelets or gold rings and you feel happy, you feel dressed, you feel, well, yourself. 

Gold, especially yellow gold, with its rich patina and ancient pedigree going back thousands of years, is the steady standby, the well-mannered metal of choice. Any discussion of this lustrous metal comes down to a basic truth: Gold is elementary, my dear. Gold jewelry that couples the mystique of the metal with superb design and craftsmanship achieves the status of an enduring classic. Many luxury houses have given us some of our most treasured and lasting examples of gold jewelry over the years.

Since its founding, in 1837, Tiffany & Co. has built its reputation on its company jewelry as well as its coterie of boutique designers, which has included Jean Schlumberger, Donald Claflin, Angela Cummings and Elsa Peretti. There are numerous gold Tiffany classics worth citing. Some are accented with gemstones, but all stand out for their design and the workmanship displayed.

For the woman who prefers a minimalist look, the Tiffany & Co. twist bangle (thin, slightly ovoid) is stylishly simple. For Cummings devotees, signature pieces feature hard stone inlay, such as her pairs of gold ear clips inlaid with black jade (a play on the classic Chanel black and tan), or bangles whose design recalls ocean waves, with undulating lines of lapis lazuli and mother-of-pearl. And just about any design by the great Jean Schlumberger is by definition a classic.

Even had he eschewed stones and diamonds, Southern-born David Webb would be hailed for the vast arsenal of heavy gold jewelry he designed. Gold, usually hammered or textured in some manner, defines great David Webb jewelry. The self-taught jeweler made very au courant pieces while drawing inspiration from ancient and out-of-the-way sources — East meets West in the commanding gold necklaces made by Webb in the early 1970s. The same could be said for his endlessly varied gold cuffs.

In Europe, many houses have given us gold jewelry that sets the highest standard for excellence, pieces that were highly sought after when they were made and continue to be so. 

Numerous designs from Cartier are homages to gold. There are the classic Trinity rings, necklaces and bracelets — trifectas of yellow, white and rose gold. As a testament to the power of love, consider the endurance of the Cartier Love bracelet.

Aldo Cipullo, Cartier’s top in-house designer from the late 1960s into the early ’70s, made history in 1969 with the Love bracelet. Cipullo frequently said that the Love bracelet was born of a sleepless night contemplating a love affair gone wrong and his realization that “the only remnants he possessed of the romance were memories.” He distilled the urge to keep a loved one close into a slim 18-karat gold bangle. 

BVLGARI and its coin jewelry, gemme nummarie, hit the jackpot when the line launched in the 1960s. The line has been perennially popular. BVLGARI coin jewelry features ancient Greek and Roman coins embedded in striking gold mounts, usually hung on thick link necklaces of varying lengths. In the 1970s, BVLGARI introduced the Tubogas line, most often made in yellow gold. The Tubogas watches are classics, and then there is the Serpenti, the house's outstanding snake-themed watches and bracelets.

A collection called Monete that incorporated the gold coins is one of several iconic BVLGARI lines that debuted in the 1970s and ’80s, catering to a new generation of empowered women. Just as designers like Halston and Yves Saint Laurent were popularizing fuss-free ready-to-wear fashion for women on the go, BVLGARI offered jewels to be lived in

Since Van Cleef & Arpels opened its Place Vendôme doors in 1906, collection after collection of jewelry classics have enchanted the public. As predominantly expressed in a honeycomb of gold, there is the Ludo watch and accessories, circa the 1920s, and the golden Zip necklace, 1951, whose ingenious transformation of the traditional zipper was originally proposed by the Duchess of Windsor. Van Cleef's Alhambra, with its Moroccan motif, was introduced in 1968 and from the start its popularity pivoted on royalty and celebrity status. It remains one of VCA’s most popular and collected styles.

Mention must be made of Buccellati, whose name is synonymous with gold so finely spun that it suggests tapestry. The house’s many gold bracelets, typically embellished with a few or many diamonds, signified taste and distinction and are always in favor on the secondary market. Other important mid-20th-century houses known for their gold-themed jewelry include Hermès and Ilias Lalaounis.

Find a stunning collection of vintage and antique gold jewelry on 1stDibs.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement ringsvintage engagement rings or Art Deco engagement rings

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.  

Finding the Right Brooches for You

Vintage brooches, which refer to decorative jewelry traditionally pinned to garments and used to fasten pieces of clothing together where needed, have seen increasing popularity in recent years.

While jewelry trends come and go, brooches are indeed back on the radar thanks to fashion houses like GucciVersaceDior and Saint Laurent, all of which feature fun pinnable designs in their current collections. Whether a dazzlingly naturalistic Art Nouveau dragonfly, a whimsical David Webb animal, a gem-studded bloom or a streamlined abstract design, these jewels add color and sparkle to your look and a spring to your step. 

Given their long history, brooches have expectedly taken on a variety of different shapes and forms over time, with jewelers turning to assorted methods of ornamentation for these accessories, including enameling and the integration of pearls and gemstones. Cameo brooches that originated during the Victorian age are characterized by a shell carved in raised relief that feature portraits of a woman’s profile, while 19th-century micromosaic brooches, comprising innumerable individually placed glass fragments, sometimes feature miniature depictions of a pastoral scene in daily Roman life.

At one time, brooches were symbols of wealth, made primarily from the finest metals and showcasing exquisite precious gemstones. Today, these jewels are inclusive and universal, and you don’t have to travel very far to find an admirer of brooches. They can be richly geometric in form, such as the ornate diamond pins dating from the Art Deco era, or designer-specific, such as the celebrated naturalistic works created by Tiffany & Co., the milk glass and gold confections crafted by Trifari or handmade vintage Chanel brooches of silk or laminated sheer fabric. Chanel, of course, has never abandoned this style, producing gorgeously baroque CC examples since the 1980s.

Brooches are versatile and adaptable. These decorative accessories can be worn in your hair, on hats, scarves and on the lower point of V-neck clothing. Pin a dazzling brooch to the lapel of your blazer-and-tee combo or add a cluster of smaller pins to your overcoat. And while brooches have their place in “mourning jewelry,” in that a mourning brooch is representative of your connection to a lost loved one, they’re widely seen as romantic and symbolic of love, so much so that a hardcore brooch enthusiast might advocate for brooches to be worn over the heart.

Today, find a wide variety of antique and vintage brooches for sale on 1stDibs, including gold brooches, sapphire brooches and more.

Questions About 3 Carat Brooch Diamond
  • 1stDibs ExpertSeptember 28, 2021
    A 3-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 3-carat diamond could cost you between $7,200 to $51,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 3-carat diamond jewelry today.
  • 1stDibs ExpertFebruary 27, 2024
    In terms of dimensions, how large a 3-carat diamond is varies. The shape of the diamond will determine its length and width. Weighing 600 milligrams, diamonds that are 3 carats are generally considered to be large stones. On 1stDibs, shop a large collection of diamond jewelry from some of the world's top dealers.
  • 1stDibs ExpertFebruary 13, 2023
    Whether a 3-carat diamond is considered big is largely a matter of personal opinion. The average diamond is 1 to 2 carats in size. On 1stDibs, shop a selection of diamond jewelry.