GIA Certified Natural Diamond Vintage Deco Pin Brooch Platinum 12418**Chairish Auctions4.5(10.3k)$5,500
1.19 CARAT OLD EUROPEAN CUT DIAMOND 2.27 BY 1.19 INCHES PLATINUM PIN BROOCHModern Jewelry4.5(203)$5,300Mar 03, 2026
2.49 CARAT OLD EUROPEAN CUT I SI1 DIAMOND PLATINUM PIN BROOCHModern Jewelry4.5(203)$4,100Mar 03, 2026
1.18 CARAT ROUND BRILLIANT I SI2 DIAMOND 14 KARAT WHITE GOLD PINModern Jewelry4.5(203)$5,400Mar 03, 2026
SoldVintage Platinum & diamond broochVintage Platinum & diamond brooch, c. 1950, set with a cluster of pear-shaped and marquise-cut diamonds, H-J color, VS-SI clarity, est. 10.0 carats, 2.5"l, approx. 18 dwt., illegibly stamped 869(?) PrSee Sold Price
SoldPlatinum Diamond Brooch, oval shape measuringPlatinum Diamond Brooch, oval shape measuring approximately 2 x 1 ¼ inches; pave set with 158 round full and single cut diamonds, approximate total carat weight is 5.75 by formula;the diamonds averagSee Sold Price
8.24ct Yellow Sapphire Platinum Diamond BroochPlatinum brooch, set with center approx. 8.24ct yellow sapphire (measures 12.7 x 11.89 x 6.2mm), surrounded with approx. 0.74ctw in diamonds. Brooch measures 28mm x 27mm. Tested plat. Weight - 10.3 grSee Sold Price
Sold(2) Platinum & Diamond Brooches. 13.7 grams, 1.5" - 2". Larger brooch has 3 round diamonds center(2) Platinum & Diamond Brooches. 13.7 grams, 1.5" - 2". Larger brooch has 3 round diamonds center diamond 2.5 carat Si-2 I/J. with 1 carat diamonds on each side Si-2 I1 H/I with diamond accents.See Sold Price
SoldArt Deco French Platinum Diamond BroochArt Deco French Platinum Diamond Brooch Weighing 21.9 grams Set with app. 9.50 Ct. of Diamonds E-G Color, VVS-VS Clarity 2 inches in lengthSee Sold Price
DAVID WEBB 18K Yellow Gold & Platinum Diamond BroochDAVID WEBB 18K Yellow Gold & Platinum Diamond BroochWeighing 43.4 gramsSet with 19 Diamonds weighing app. 1.70 Ct.F-G Color, VVS-VS Clarity1.75 inches in lengthSee Sold Price
SoldArt Deco Platinum Diamond BroochArt Deco Platinum Diamond Brooch Weighing 15.1 grams Set with 135 Diamonds weighing app. 9.00 Ct. E-G Color, VS1-SI2 Clarity 2.25 x 1 inchesSee Sold Price
SoldGORGEOUS PLATINUM & DIAMOND BROOCHThis fabulous platinum & diamond brooch is stunning! The piece features a total of one hundred eighteen (118), prong set, round brilliant and round single cut diamonds and thirty-seven (37), channel sSee Sold Price
SoldVintage Platinum & Diamond Brooch or PinVintage fancy and large floral and bow brooch. 139 high quality diamonds with a approx. weight of 9.60ct set in a hand fabricated platinum setting. Unmarked, tested for platinum. approx 1.5" X 2" withSee Sold Price
SoldPlatinum Diamond Brooch.RBC, OEC and single cut diamonds approximately 8 cts TW. Approximately I-K, SI. 11.1 dwts.See Sold Price
SoldPlatinum Diamond Brooch11 pear cut diamonds, approx. 2.00ctw., G-H, VS2-SI1, 70 assorted cut diamonds, straight baguettes, tapered baguettes, lozenge, trapezoids, approx. 4.15ctw., G-H, VS2-SI1, length 2-1/8 in. at longestSee Sold Price
SoldRussian Gold & Platinum Diamond Brooch.Amazing Russian platinum and gold with high quality old cut diamonds, pearl brooch/pendant. Bears Stamp for Faberge? AT and 72 (18 Kt.) Size 4 centimeters by 5 centimeters. Weights 12 grams (0.42&rdquSee Sold Price
Sold8.5 CT Art Deco Platinum & Diamond BroochFine Art Deco diamond & platinum brooch in a swirl design and 5 hinged hanging legs all set with 12 marquise cut diamonds approx. .25 cts each, 38 banquette cut diamonds from .02 to .1 cts, 60 round cSee Sold Price
Sold2 ct. Platinum & Diamond Brooch346-661 Two Carat Platinum and Diamond Brooch. Art Deco Setting. 2.5" long. World Class item. Would make a stunning Pendant. Good stones, incredible Mine Cut Diamonds.See Sold Price
SoldVictorian 18K & Platinum Diamond BroochVictorian 18K & Platinum Diamond Brooch Weighing 9.1 grams Set with 49 Old European-cut Diamonds weighing app. 2.60 Ct. F-H Color, VVS-VS Clarity 2 inches in lengthSee Sold Price
SoldArt Deco Platinum Diamond Brooch PinArt Deco platinum brooch/pin decorated with mixed cut diamonds. Center stone- Old European cut diamond-approx. 0.79ct (VS2/I), two side stones-Old European cut diamonds-approx. 0.55ctw (SI1-SI2/I-J),See Sold Price
SoldPLATINUM & DIAMOND BROOCH, 6.50CTWPLATINUM & DIAMOND BROOCH, 6.50CTW set with 58 marquise and round diamonds approx. 6.50 carats (in our opinion: I color, VS2-SI1clarity, however not guaranteed), largest diamond 0.34 carats, tests plaSee Sold Price
SoldVintage Platinum Diamond Broochcircle motif, 20 round brilliant cut diamonds, approx. 2.63ctw., nine pear cut diamonds, approx. 1.70ctw., one marquise cut diamond, approx. 0.15ct., VS, G-I, stamped "IRID PLAT", platinum, 30.0mm diaSee Sold Price
SoldPlatinum Diamond Brooch PendantMETAL: Platinum. GEMSTONES: Diamonds approx. 3.00ctw. MEASUREMENTS: Brooch is 42mm x 33mm. has a hook on the bottom to attach a drop. TESTED: Plat. WEIGHT: 12.5 grams.Gemstones have not been graded foSee Sold Price
SoldTiffany & Co Platinum Diamond BroochFully marked on back. In the Beaux -Arts taste, early 20thC. From the same estate as the matching ring (lot 36). Missing one emerald baguette. H 1 W 2 D 1/8 Weight 8 Grams Missing one emerald baguetteSee 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
SoldArt Deco Filigree Platinum Diamond Brooch PinMETAL: Platinum. GEMSTONES: Old mine cut diamonds total approx. 1.55ctw. Center diamond approx. 0.65ct. MEASUREMENTS: Brooch is 51mm x 19mm. TESTED: Plat. WEIGHT: 10.1 grams.Gemstones have not been grSee Sold Price
SoldPlatinum Diamond Broochcenter round cut synthetic blue sapphire approx. 7.6mm, approx. 156 old European cut diamonds estimated total weight 3.50cts., H-J, VS to SI, tested platinum, 13/16 x 2-7/8 in., 11.3 gramsÿ - ProvenaSee Sold Price
SoldLady's Leaf Platinum & Diamond Brooch 1.25''. Art decoLady's Leaf Platinum & Diamond Brooch 1.25''. Art deco fur clip has three round brilliant and rose cut champagne colored diamonds at center of approx. .65ctw. Leaves are set with approx. (85) mixed cuSee Sold Price
