Sold2023One Platinum, Diamond and Synthetic Sapphire BroochGUILD laboratories' certificates are as accurate as GIA AND AGL certificates, and Sumer collection stands a hundred percent behind Guild laboratory's certifications.See Sold Price
Sold2023Three broochesThree brooches 19th-early 20th centuryComprising two 19th Century brooches, one shell cameo and metal brooch, one garnet and gold dome brooches, and one platinum, diamond and synthetic sapphire bar pSee Sold Price
Sold2017Diamond, synthetic sapphire and platinum bar broochArt Deco brooch set with European and rose-cut diamonds, weighing in total approximately 0.90ct; with European marks; length: 2 in. (loss of one diamond and sapphire)See Sold Price
Sold2021ART DECO PLATINUM SAPPHIRE & DIAMOND ROUND BROOCHOne Art Deco period lady's round platinum diamond & sapphire brooch. The brooch measures approx. 1.50" round and features a total of twenty-three (23), bead set old mind cut diamonds measuring 1.70 -See Sold Price
Sold2023Platinum, Diamond and Sapphire BroochPlatinum, Diamond and Sapphire Brooch One old European-cut diamond ap. .80 ct., single and rose-cut diamonds, square-cut sapphires, c. 1915, one sapphire missing, ap. 10.3 dwts. C Collection of an EasSee Sold Price
Sold202418k Gold Platinum Diamond Bird Brooch PinMETAL: 18k Gold/Platinum. GEMSTONES: Diamonds approx. 0.54ctw. Synthetic sapphire and ruby. MEASUREMENTS: Brooch is 34mm x 30mm. TESTED: Plat. 18k. WEIGHT: 9.4 grams.Gemstones have not been graded forSee Sold Price
Sold2020ART DECO PLATINUM, DIAMOND, & SAPPHIRE BAR BROOCHcentering one round brilliant cut diamond [K/VS2] weighing approximately 0.92 carats total; 104 single and full cut diamonds [G-H/VS1-VS2] weighing approximately 1.40 carats total; 22 round cut and roSee Sold Price
Sold2020ART DECO PLATINUM, DIAMOND, & SAPPHIRE BAR BROOCHcentering one rectangular step cut very dark sapphire weighing approximately 2.50 carats total; six old European cut diamonds [G-H/VS1-VS2] weighing approximately 0.80 carats total; and 62 single andSee Sold Price
Sold2018A Yellow Gold, Platinum, Diamond and Synthetic SapphireA Yellow Gold, Platinum, Diamond and Synthetic Sapphire Toi et Moi Ring, containing one old European cut round diamond weighing approximately 1.35 carats and one round mixed cut synthetic sapphire meaSee Sold Price
Sold2021Three Rings, One Platinum, Two 18kPlatinum "pt 900" band with diamonds and "18k" yellow gold accents, 9.8 grams, "18K" white gold ring with two diamonds and synthetic Sapphire Stone, Yellow Gold Band, 9.0 grams 18KSee Sold Price
Sold2018A Sapphire & Diamond Brooch.A Sapphire & Diamond Brooch. Platinum bar mounting contains one checkerboard faceted blue sapphire with one oval faceted pink sapphire on either side. Throughout the brooch are eight bead set round diSee Sold Price
Sold2019Platinum, Synthetic Sapphire, and Diamond Bar BroochPlatinum, Synthetic Sapphire, and Diamond Bar Brooch the open-work bar brooch centering a bezel-set circle-cut synthetic sapphire measuring approx. 6.36 x 4.46 mm. and weighing approx. 1.55 cts., furtSee Sold Price
Sold2016Art Deco 1.50ctw Diamond Platinum Brooch PinA platinum brooch set with approximately 1.50ctw of old mine cut diamonds separated by synthetic sapphires. The brooch measures 43mm x 23mm and weighs 6.0 grams.Gemstones have not been graded for coloSee Sold Price
Sold2018*An 18 Karat Yellow Gold, Platinum, Synthetic Ruby,An 18 Karat Yellow Gold, Platinum, Synthetic Ruby, Diamond, Synthetic Sapphire, Cultured Pearl and Glass Sword Jabot, French, consisting of a sword and sheath jabot pin containing one cushion shape miSee Sold Price
Sold2020Edwardian Diamond, Sapphire, Platinum Pendant EnhancerEdwardian Diamond, Sapphire, Platinum Pendant Enhancer Brooch. Centering one old European-cut diamond weighing approximately 1.20 ct., flanked by two old European-cut diamonds weighing approximately 0See Sold Price
Sold202117 Cameo Broochessome also pendants, one with one single cut diamond, four synthetic blue sapphires, stamped "14K", white gold, 2-1/8 x 1-3/4 in., 20.2 grams; one gold filled cameo, 1-3/4 x 1- 3/8 in., 12.5 grams; twoSee Sold Price
Sold202255192: Art Deco Diamond, Sapphire, Synthetic Sapphire, Art Deco Diamond, Sapphire, Synthetic Sapphire, Platinum Pendant-Brooch Stones: European and single-cut diamonds weighing a total of approximately 2.80 carats; FrenSee Sold Price
Sold2019D. Webb 30.7ctw Emerald, Sapphire, Diamond BroochDavid Webb 17.20ctw Emerald & Blue Sapphire, 13.50ctw VS1-VS2/F-G Diamond Solid Platinum/18K Yellow Gold One of a Kind Convertible Brooch/Pendant (Comes W/$300,000 Appraisal) - This immaculately craftSee Sold Price
Sold2021Platinum, Diamond and Sapphire BroochCirca 1920's; Total Gemstone weight 6.96ct; Scalloped filigree plaque set throughout with diamonds and synthetic sapphires. Largest diamond is .52ct; Appraisal upon request. 17.6 gramsSee Sold Price
Sold2021Collection of Diamond, Synthetic Sapphire, EternityIncluding one ring featuring twenty-one old European-cut diamonds weighing a total of approximately 1.25 cttw. set in a platinum mounting, size 6 1/4; together with a pair of matched rings, each featuSee Sold Price
Sold2017Edwardian Style Platinum Diamond & Sapphire PendantEdwardian style platinum diamond & sapphire pendant platinum diamond and sapphire pendant the pendant was originally a brooch but has been replaced with an 18 kt yg gold one. This pendant is clearly mSee Sold Price
Sold2021Antique Art Deco 18K gold and Platinum Diamond RingThis original Art Deco ring was handmade in 18k gold and platinum during the 1920´s. One cushion cut synthetic sapphire that weighs 3ctw approx. radiates from the center of this lovely piece. The cSee Sold Price
Sold2015Platinum & Diamond Circle Brooch.Synthetic sapphires. OEC diamonds approximately .45 cts. 3.3 dwts.See Sold Price
Sold2021Platinum 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
Jun 12DOYLE Auctioneers & AppraisersPlatinum and Diamond Chain Necklace with Diamond and Synthetic Sapphire Pendant-Brooch$2,500
Jun 15Hess Fine AuctionsArt Deco Platinum 5.35ctw Fine Diamond Natural Sapphire Antique Brooch 14K White Gold Pin$300(6 bids)
2 days LeftFederal Assets Auctioneers0.29 ctw Diamond and 0.88 ctw Blue Sapphire Platinum Ring (1.17 ctw Diamonds)$1
Jun 24Platinum Auction GroupArt Deco Platinum Diamond Brooch Gold Enamel Amethyst 14k Yellow$300(1 bid)
21 hrs LeftElmwood'sAN IMPORTANT BELLE EPOQUE CEYLON NO HEAT SAPPHIRE, DIAMOND AND PEARL BROOCH in platinum and yellow£30,000