![JEWELRY. Art Deco Platinum Ruby and Diamond Brooch: Art Deco platinum openwork brooch displaying a central flush set faceted ruby surrounded by (14) round full cut diamonds. The central ruby is further accented by (4) straight diamond baguettes and (2)](https://p1.liveauctioneers.com/483/336502/181979885_1_x.jpg?height=310&quality=70&version=1720816468)
Platinum Brooches & Pins
![JEWELRY. Art Deco Platinum Ruby and Diamond Brooch: Art Deco platinum openwork brooch displaying a central flush set faceted ruby surrounded by (14) round full cut diamonds. The central ruby is further accented by (4) straight diamond baguettes and (2)](https://p1.liveauctioneers.com/483/336502/181979885_1_x.jpg?height=310&quality=70&version=1720816468)
![25ct Cobalt Blue Lab Sapphire Diamonds Brooch pin Platinum+: Flaming Sapphire Brooch 20ct Lab Sapphires Emerald Cuts, Cobalt Blues. 5.00ct Natural Diamonds. Rounds, Full cut Brilliant. G-color VS-2 clarity. Platinum intricate details 28 grams. Overall: 3 X 1.3](https://p1.liveauctioneers.com/5584/336892/182244872_1_x.jpg?height=310&quality=70&version=1721772322)
![GIA Certified Natural Diamond Vintage Deco Pin Brooch Platinum 12418: Title GIA Certified Natural Diamond Vintage Deco Pin Brooch Platinum 12418 $12,000.00 PRODUCT DESCRIPTION GIA Certified Natural Diamond Pin. 1.20ct](https://p1.liveauctioneers.com/5584/336893/182245682_1_x.jpg?height=310&quality=70&version=1721772323)
![Tiffany & Co. Vintage Platinum Diamond & Ruby Brooch Branch Pin: Authenticity Guaranteed. Size 2 1/2 Inch / 61 mm.Weight11.9 dwt / 18.4 g. Approximately Carats of Diamonds tw 2.5 carats. Approximately Carats of Ruby tw 0.80 carats. These Brooch is very rare model.](https://p1.liveauctioneers.com/7995/335313/181274444_1_x.jpg?height=310&quality=70&version=1720132595)
![JEWELRY. Platinum, 14kt Gold and Diamond Brooch.: Antique platinum brooch inlaid throughout with Old European cut diamonds - with a later added 14kt white gold brooch backing stamped, "14K" to the clasp. Accompanied by a 9kt bi-color yellow](https://p1.liveauctioneers.com/483/336502/181979867_1_x.jpg?height=310&quality=70&version=1720822327)
![Platinum & Diamond Swirl Brooch, Circa 1960s: Platinum & Diamond Swirl Brooch, Circa 1960sAppears unmarked, tested to be platinum, containing three round prong set diamonds, total weight approx. 1.30ct, fourteen marquise prong set diamonds, total](https://p1.liveauctioneers.com/3731/336409/181912292_1_x.jpg?height=310&quality=70&version=1720797948)
![JEWELRY. (2) Filigree Diamond Brooches.: Includes a filigree 14kt white gold and platinum brooch accented by (3) Old European cut diamonds and (12) faceted blue gems, most surely sapphires - stamped. "14K & Plat"; and a 17.5kt](https://p1.liveauctioneers.com/483/336502/181979802_1_x.jpg?height=310&quality=70&version=1720823166)
![VINTAGE TIFFANY & CO PLATINUM BOW 3ct DIAMOND BROOCH: VINTAGE TIFFANY & CO. 3ct PLATINUM BROOCH PIN Brooch measures 1.85" H x 1.75" W Vintage Tiffany & Co. Platinum 3ct Diamond bow brooch with filigree design Center diamond apx 0.50ct Emerald cut Super c](https://p1.liveauctioneers.com/3780/334181/180579621_1_x.jpg?height=310&quality=70&version=1718997031)
![TIFFANY&CO BROOCH DRAGONFLY LARGE DIAMOND PLATINUM: TIFFANY&Co Brooch Dragonfly Large Diamond Platinum Brand: TIFFANY&Co Type: Brooch Material: Platinum PT950 Color: None Size: Top Size:1.6inch/40x47.2x8.5mm Accessories: None Accessories N](https://p1.liveauctioneers.com/6177/335834/181549367_1_x.jpg?height=310&quality=70&version=1720456928)
![H.Stern 21.00 Carat Diamond 4.00 Carat Pear Shape Emerald Platinum Pin Brooch: Designer: H.STERN Title: H.Stern 21.00 Carat Diamond 4.00 Carat Pear Shape Emerald Platinum Pin Brooch Style: Pin Metal: Platinum Gemstone 1: 21 Carat Diamond Number of Stones: 87 Gemstone 2: 4 Carat](https://p1.liveauctioneers.com/3780/334479/180741111_1_x.jpg?height=310&quality=70&version=1719366452)
![HANDMADE VINTAGE SWALLOW PENDANT/BROOCH: Entire body set with pave Diamonds. Ruby eyes and set in platinum with a yellow gold back. 10.5dwt tw. 1 1/2" high x 3" wide. Perfect condition.](https://p1.liveauctioneers.com/957/337350/182586073_1_x.jpg?height=310&quality=70&version=1721758198)
![Victorian 18kt Gold Pendant / Brooch with Diamonds and Pearls: Victorian Era Brooch / Pendant crafted in 18kt yellow Gold and Platinum on top, featuring two cream Pearls about 6.8 mm diameter. Accented with Old mine Diamonds weighing Approx. 4.30 carats. H-J colo](https://p1.liveauctioneers.com/7877/336738/182148140_1_x.jpg?height=310&quality=70&version=1721138978)
![Edwardian DIAMOND PLATINUM BROOCH PIN OPEN-WORK 1910s 3.47 cts: Edwardian (c. 1910’s) Diamond & Platinum Open-work Brooch This stunning antique brooch is one-of-a-kind piece and now you have a chance to owe it! Created in Europe in the 1901 – 1910's which is c](https://p1.liveauctioneers.com/3780/334177/180574720_1_x.jpg?height=310&quality=70&version=1718992884)
![An early 20th century platinum and gold aquamarine and diamond brooch. May be worn as a pendant.: An early 20th century platinum and gold aquamarine and diamond brooch. May be worn as a pendant. Principal aquamarine calculated weight 10.05cts, based on estimated dimensions of 14 by 11.5 by 8.5mms.](https://p1.liveauctioneers.com/62/336960/182271992_1_x.jpg?height=310&quality=70&version=1721326829)
![An Art Deco platinum and gold French-cut sapphire and single-cut diamond bow brooch.Estimated total: An Art Deco platinum and gold French-cut sapphire and single-cut diamond bow brooch.Estimated total diamond weight 0.50ct, G-I colour, VS-SI clarity. Length 5.8cms. 10gms.](https://p1.liveauctioneers.com/62/336960/182272011_1_x.jpg?height=310&quality=70&version=1721326829)
![Art Deco filigree Brooch in 18kt gold and Platinum with Diamonds: Art Deco Filigree Plaque Brooch crafted in 18k yellow Gold and Platinum on top. Featuring 5 Old mine Diamonds weighing Approx. 0.95 carats. J-K color, SI clarity. Along with Rose cut Diamonds weighing](https://p1.liveauctioneers.com/7877/336738/182148090_1_x.jpg?height=310&quality=70&version=1721138978)
![TIFFANY & CO. Platinum Diamond Butterfly Brooch: TIFFANY & CO. Platinum Diamond Butterfly BroochWeighing 34.8 gramsSet with app. 6.50 Ct. of DiamondsD-F Color, VVS-VS Clarity2.25 inches](https://p1.liveauctioneers.com/1692/335745/182275613_1_x.jpg?height=310&quality=70&version=1721312860)
![Art Deco MARCHAK Coral Platinum Gold PIN BROOCH Antique French: Art Deco Coral Diamond Enamel Platinum 18k Yellow Gold Pin Measurements: Diameter 2-7/8 x 3/8 inches. Weight 10.4 grams. Stamped with Marchak maker's mark. In great condition; wear consistent with age](https://p1.liveauctioneers.com/3780/334177/180574972_1_x.jpg?height=310&quality=70&version=1718992884)
![Art Deco DOUBLE CLIP Pin Brooch Pair French Platinum Gold Pearl Diamond 1930s: Pair of Pearl Diamond Platinum Yellow Gold Double Clips French 1930s A pair of stunning and unusual double clips. Chic accent to any outfit, the double clips are a great addition to your jewelry colle](https://p1.liveauctioneers.com/3780/334177/180574764_1_x.jpg?height=310&quality=70&version=1718992884)
![A mid 20th century platinum and gold brilliant and baguette-cut diamond double clip brooch.: A mid 20th century platinum and gold brilliant and baguette-cut diamond double clip brooch. Estimated total diamond weight 6cts, G-I colour, VS clarity. French assay marks. Length 4cms. 22.6gms.](https://p1.liveauctioneers.com/62/336960/182271834_1_x.jpg?height=310&quality=70&version=1721326829)
![Platinum Leaf Brooch with 2.20 Cts in Diamonds: Leaf Brooch crafted in Platinum, featuring Round cut and Single cut Diamonds weighing together Approx. 2.20 carats. H-J color, VS clarity. Measurements: 3.1 x 0.8 inches. Total weight: 12.2 grams.](https://p1.liveauctioneers.com/7877/336738/182148102_1_x.jpg?height=310&quality=70&version=1721138978)
![Retro 18kt Gold Brooch with Diamonds and Turquoises: Circa 1950. Retro Brooch crafted in 18k yellow Gold and Platinum, accented with Single cut Diamonds weighing Approx. 0.80 carats. G-H color, VS clarity. Along with three cabochon Turquoises about 10mm](https://p1.liveauctioneers.com/7877/336738/182148282_1_x.jpg?height=310&quality=70&version=1721138978)
![ART DECO PLATINUM AND DIAMOND BROOCH: Very pretty Art Deco Platinum and Diamond BroochThe pin and the catch are 14K white goldThere are approximately 1 round diamond = 0.55 ct, 2 round Diamonds = 0.50 ct, 88 sc and old cut diamonds = 2.27](https://p1.liveauctioneers.com/3780/335416/181228606_1_x.jpg?height=310&quality=70&version=1720027374)
![Art Deco DIAMOND RUBY EMERALD PLATINUM GOLD EARRINGS PIN SET 1930s Indian Epic: c.1930’s Indian Epic Motif Gems, Diamond, Platinum & Gold Earring & Pin Set Wonderful set consisting of a pair of earrings and a pin that is a great addition to your collection. Inspired by Indian e](https://p1.liveauctioneers.com/3780/334177/180574724_1_x.jpg?height=310&quality=70&version=1718992884)
![EDWARDIAN PEARL AND DIAMOND BROOCH: EDWARDIAN PEARL AND DIAMOND BROOCH,4.9 grams, high carat gold and platinum.Diamonds bright and lively.Pearls generally well matched (untested).W. 6 cm.](https://p1.liveauctioneers.com/7243/337172/182419606_1_x.jpg?height=310&quality=70&version=1721598572)
![An early 20th century platinum and gold aquamarine and diamond point brooch. Aquamarine calculated: An early 20th century platinum and gold aquamarine and diamond point brooch. Aquamarine calculated weight 15.26cts, based on estimated dimensions of 16.6 by 13.7 by 10.5mms. Length 5.2cms. 8.3gms.](https://p1.liveauctioneers.com/62/336960/182271991_1_x.jpg?height=310&quality=70&version=1721326829)
News about Platinum Brooches & Pins
![Harry Winston platinum and diamond ring rocked Doyle Fine Jewelry auction](https://www.liveauctioneers.com/news/wp-content/uploads/2023/04/Screenshot-2023-04-28-at-4.23.26-PM-1.png)
Harry Winston platinum and diamond ring rocked Doyle Fine Jewelry auction
NEW YORK – Jewelry sales at Doyle continue to surpass expectations at all levels of value. Auctions of Important Jewelry on April 27 and Fine Jewelry & Luxury Handbags on April 26 saw determined bidders from across the country and around the world drive exceptional prices throughout both sales, sending the week’s total past $6 million.
![Platinum sparkler, Remington bronze command attention at Abell Auction, May 22](https://www.liveauctioneers.com/news/wp-content/uploads/2022/05/Screen-Shot-2022-05-14-at-5.12.20-PM.png)
Platinum sparkler, Remington bronze command attention at Abell Auction, May 22
LOS ANGELES – Abell Auction Co. will present a fine art, antiques, 20th-century design and fine jewelry auction on Sunday, May 22, starting at 9 am Pacific time. Featuring property from prominent California estates, the online sale will be highlighted by an original Frederic Remington bronze Rattlesnake sculpture, estimated at $100,000-$150,000, and a collection of […]
![Picassos, Tiffany table, Agassiz platinum watch at Coker’s, June 18](https://www.liveauctioneers.com/news/wp-content/uploads/2011/06/2011_0608_9314248_lead.jpg)
Picassos, Tiffany table, Agassiz platinum watch at Coker’s, June 18
NEW MARKET, Tenn. – On Sat., June 18, commencing at 10 a.m. Eastern time, John W. Coker, Ltd., will conduct an eclectic Summer Estate Auction featuring exquisite timepieces and fine jewelry; paintings and decorative art; rugs and other quality antiques. Internet live bidding will be provided by LiveAuctioneers.com. From a Philadelphia art pottery collector’s estate […]
![Jasper52 presents Treasures of Time: Estate Designer Jewelry May 28](https://www.liveauctioneers.com/news/wp-content/uploads/2024/05/178015692_1_x.jpg)
Jasper52 presents Treasures of Time: Estate Designer Jewelry May 28
NEW YORK – On Tuesday, May 28, starting at 7 pm Eastern time, Jasper52 will conduct a sale titled Treasures of Time: Estate Designer Jewelry, consisting of exactly 221 lots. Absentee and Internet live bidding will be available through LiveAuctioneers. Highlights include an 18K gold and diamond bracelet by the Italian jewelry firm of Roberto […]