Art Deco Platinum Brooch 12.20 Ct Diamonds 104 European-Cut 16 BaguetteBidhaus4.2(836)$1002 days Left
Art Deco Platinum and 14k White Gold Diamond Wreath Dangle Brooch Circa 1920sMynt Auctions4.4(822)$10023 hrs Left
Art Deco Platinum Brooch 12.20 Ct Diamonds 104 European-Cut 16 BaguetteBidhaus4.2(836)$7,500Feb 13, 2026
JEWELRY. Platinum and Diamond Pendant or Brooch.Clarke Auction Gallery4.5(604)$200(2 bids)4 days Left
Art Deco Double Clip Brooch 18K White Gold 14.20 Carats Harbor DiamondsBidhaus4.2(836)$27,000Feb 12, 2026
SoldMid Century Platinum Diamond Brooch PinMid century platinum drop brooch, with approx. 1.77ctw SI2/G-H diamonds. Brooch measures 38mm x 30mm. Weight - 7.2 grams.See Sold Price
SoldMidcentury Platinum Diamond BroochMETAL: Platinum. GEMSTONES: Diamonds approx. 3.50 ctw. MEASUREMENTS: 50mm x 28mm. TESTED: Platinum. WEIGHT: 16.9 grams. Gemstones have not been graded for color and clarity, and tested for clarity andSee Sold Price
SoldMidcentury Platinum Diamond Brooch PinMETAL: Platinum. GEMSTONES: Diamonds approx. 3.40ctw (one missing stone). MEASUREMENTS: Brooch is 38mm x 30mm. TESTED: Plat. WEIGHT: 13.6 grams.Gemstones have not been graded for color and clarity ,anSee Sold Price
SoldMidcentury Platinum Diamond Brooch PinMETLA: Platinum/ Gold stem/hardware. MEASUREMENTS: Brooch is 44mm x 30mm. GEMSTONES: Diamonds - approx. 73 stones, mix of rose cut and old mine old Euro. TESTED: Plat/Gold. WEIGHT: 10.9 grams.GemstoneSee Sold Price
SoldMid Century Platinum Diamond Bow Brooch PinMETAL: Platinum. MEASUREMENTS: Brooch is 58mm x 34mm. Center stone is missing, center will fit approx. 6.5mm stone. GEMSTONES: Diamonds approx. 3.00ctw. TESTED: Plat top/ Gold back. WEIGHT: 15.7 gramsSee Sold Price
SoldMidcentury Platinum Diamond Bamboo BroochMETAL: Platinum. MEASUREMENTS: Brooch is 73mm x 35mm. GEMSTONES: Diamonds approx. 1.60ctw. MARKED: PT. Astor. WEIGHT: 16.7 grams.Gemstones have not been graded for color and clarity ,and tested for clSee Sold Price
SoldMidcentury Platinum Diamond Flower Brooch PinMetal : Platinum Designer : Not Signed Gemstone : Diamonds approx. 1.80ctw (one missing). Measurements : Brooch is 35mm x 26mm. Marked: : Tested plat. Weight: : 12.8 gramSee Sold Price
SoldMid Century 1950's Platinum 4.00ctw Diamond Brooch PinMid Century Platinum Diamond Pin. Adorned with round and baguette cut diamonds - approx.4.00ctw . Measurements - Pin is 34mm in diameter. Tested - Platinum. Weight - 14.1 grams.See Sold Price
SoldA mid 20th century platinum old-cut diamond brooch,A mid 20th century platinum old-cut diamond brooch, with baguette-cut diamond accents. Estimated total diamond weight 4cts.French re-strike marks. Length 3.2cms. 11.7gms.See Sold Price
SoldMid Century Platinum 18k Gold Diamond Brooch PinMid century platinum and 18k yellow gold brooch with rose cut and old mine cut diamonds. Center diamond approx. 0.21ct, surrounding diamonds approx. 1.60ctw. Brooch is 48mm x 38mm. Tested: Plat, 18k.See Sold Price
SoldMidcentury Platinum 14k Gold Diamond Brooch PendantMETAL: Platinum and 14k Gold. GEMSTONES: Old mine diamonds approx. 2.35ctw. MEASUREMENTS: Brooch is 38mm x 35mm. MARKED: Lebolt. Tested - Plat, 14k. WEIGHT: 11 grams.Gemstones have not been graded forSee Sold Price
SoldCustom articulated diamond and platinum broochCustom mid-century articulated diamond and platinum brooch, of spray from, having 81 round, pear, baguette, and marquise diamonds of G-H color and VS1 to VS2 clarity, weighing 17.30ctw, with no appareSee Sold Price
SoldMCM Vintage Platinum Diamond Spray BroochAn exceptional, large midcentury platinum and diamond spray brooch featuring approximately 3.70 carats of diamonds including 3 large marquise cut diamonds, 7 large round brilliant cut diamonds, 19 bagSee Sold Price
SoldMid 20th century platinum diamond and ruby broochEstimated total diamond weight 2.75cts, G-J colour, VS clarity.  See Sold Price
SoldApprox. 14ctw Fine White Clean Diamond Large Platinum Midcentury Swirl Brooch ClipTitle: Approx. 14ctw Fine White Clean Diamond Large Platinum Midcentury Swirl Brooch Clip Description: Brilliantly fiery diamond ca. 1950s platinum brooch / clip. We took out several of the stones toSee Sold Price
Sold14k Gold Platinum Diamond American Indian Chief BroochVintage mid century Indian Chief brooch. Crafted of solid 14k gold and Platinum. Features a bare chested Chief in full headdress with a tomahawk. Pave set with diamonds. Contains colored gemstones witSee Sold Price
SoldMid-Century Platinum Emerald Diamond Swirl Ring 1.52 ctMid-Century 1950s platinum estate ring showcasing a 1.52?ct J/SI2 round brilliant diamond at its center, nestled within an elegant emerald and diamond swirl motif. Resizing included. - 1.52 carat rounSee Sold Price
Sold6 CT Mid Century Platinum & Diamond EarringsFine ca. 1940 platinum earrings set in a floral form having five heart shaped petals each with 14 .03 round cut diamonds in surround. Center with a .3 ct round cut diamond and 5 .1 ct round cut diamonSee Sold Price
SoldMen's Mid Century Platinum, Star Sapphire & Diamond Ringsize 13 ring; the blue-gray star sapphire measures 21 x18 x13.9 mm with an estimated weight of 58 carats; sapphire displays natural color zoning and cracks are present in the crown and pavilion side wSee Sold Price
SoldMid Century Platinum Diamond Opal RingBlack opal surrounded by baguette and brilliant cut diamonds in a floral motif. Opal 6.24 carats, diamonds 1.79 ctw. Ring measures 7/8 x 1 x 1 1/4 T. Weight 14g. Excellent condition.See Sold Price
SoldMid Century Platinum Diamond EarringsMETAL: platinum. GEMSTONES: diamonds-approx. 1.50ctw. MEASUREMENTS: earrings are 25mm long x 8mm at widest point. TESTED/MARKED: tested platinum top, backs marked 14K. WEIGHT: 5.7 grams.Gemstones haveSee Sold Price
SoldMid Century Platinum Diamond Ballerina RingMetal : Platinum Designer : Not Signed Gemstone : Diamonds approx. 3.30ctw (center approx. 0.75ct H-I/VS2-SI1). Measurements : Ring size 5.75, top is 20mm in diameter. Marked: : PlatinSee Sold Price
SoldMid Century Platinum 18k Gold Diamond EarringsMETAL: 18k Gold/ Platinum. MEASUREMENTS: Earrings are 36mm x 15mm. GEMSTONES: Diamonds - approx. 3.30-3.50ctw. TESTED: Plat/18k. WEIGHT: 13.2 grams.Gemstones have not been graded for color and claritySee Sold Price
SoldMid Century Platinum Diamond Ring MountingMETAL: platinum. GEMSTONES: diamonds-approx.1.50ctw. MEASUREMENTS: ring size 5.25. Ring top is 21mm in diameter. Ring center will fit approx. 6.7mm round stone. TESTED: platinum. WEIGHT: 9.7 grams. GeSee Sold Price
