Antique Art Deco 11.20Ct Black Onyx and 0.91Ct Diamond, Platinum Brooch

A fine and impressive antique Art Deco style black onyx brooch in 15 karat yellow gold, platinum set with 0.57 carat (total) diamonds; part of our an...

A stunning, fine and impressive antique French 1910's 5.00 carat diamond and platinum Art Deco brooch; part of our diverse antique diamond brooches collection. This stunning, fine a...

A stunning, fine and impressive 1.02 carat emerald and 11.88 carat diamond brooch in platinum; part of our authentic antique Art Deco jewellery/jewelry collection This stunning, fine and impressive antique brooch has been crafted in platinum. The pierced decorated Art Deco frame features an impressive 1.02ct emerald cut emerald flanked with tiered motifs embellished with a total of twenty-eight square cut diamonds. The central geometric setting is further embellished with fifty pav© set diamonds, in a combination of Old European and eight-cuts. This stunning diamond and emerald brooch is ornamented with a segmented, angular frame ornamented with eighty-eight diamonds. The exceptional Art Deco setting incorporates collar designs to the cardinal points, accented with a total of seventy-eight diamonds, in a combination of square, Old European and eight cuts. The brooch secures to the reverse with a hinged pin and sheath style fastening. This versatile brooch incorporates a ring loop attachment to the reverse of the setting, allowing the piece to be worn horizontally as a pendant. This antique brooch is supplied with an independent diamond and gemstone grading report card. This stunning brooch has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as platinum. 'Rather than regarding inclusions in coloured stones as harmful, in small sizes and numbers that do not in any way detract from their beauty, they should be regarded as adding to desirability, for they provide identifying characteristics.' Reference:The Connoisseur's Guide to Precious Gemstones, R. Wise, Brunswick House Press. Images do not always reflect the true colour and brilliance of gemstones and diamonds. The video however provides a truer representation of the actual colour and showcases each stone. Condition This original 1920s Art Deco brooch...

A magnificent, fine and impressive antique 5.73 carat diamond and platinum Art Deco brooch; part of our diverse collection of diamond brooches. This magnificent, fine and impressive...

This Platinum Black Onyx and Diamond Brooch is a striking blend of boldness and elegance. The centerpiece features 2 large black onyx gem...

Art Deco Old mine cut Diamond and Onyx on Platinum and Gold Barrette Brooch. Circa 1930. Width: 6.60 centimeters. Height, at the highest: 0.85 centimeters. Total weight: approx. 7.7...

Art Deco platinum brooch , with approx. 3.80ctw SI/I diamonds and onyx (few stones are chipped). The brooch measures 2 3/8" x 1 1/16". With Continental assay marks on the stem. Weig...

Weight: 11.31gr Metal: 18kt white gold and platinum Condition: Very Good Stones: 1 Diamond • Total carat weight: 0.80ct approximately • Cut: Old European • Colour: H/I • Clarity...