![CARTIER Vintage 6.50cts Diamond Platinum Elegant Botanical Pin Brooch: (3) round-cut, prong-set, (3) marquise-cut, half bezel-set, (11) marquise diamond, diamonds and (12) tapered baguette-cut Diamonds, Channel set, and (8) Pear-shape diamond. Total Diamond Weight 6.50 c](https://p1.liveauctioneers.com/2211/332393/179263851_1_x.jpg?height=310&quality=70&version=1717524154)
Platinum Brooches & Pins
![CARTIER Vintage 6.50cts Diamond Platinum Elegant Botanical Pin Brooch: (3) round-cut, prong-set, (3) marquise-cut, half bezel-set, (11) marquise diamond, diamonds and (12) tapered baguette-cut Diamonds, Channel set, and (8) Pear-shape diamond. Total Diamond Weight 6.50 c](https://p1.liveauctioneers.com/2211/332393/179263851_1_x.jpg?height=310&quality=70&version=1717524154)
![Vintage 1950's 18.00cts Diamond Brooch Platinum Pin: It showcases six large round European-cut diamonds, approx. 5.00 carats in total, 21 genuine baguette diamonds, approx. 5.00 carats in total, and some 146 genuine round diamonds, approx. 8.00 carats i](https://p1.liveauctioneers.com/2211/332393/179264035_1_x.jpg?height=310&quality=70&version=1717524154)
![Vintage Retro 15.51ct Diamond Platinum Floral Motif Lapel Brooch: This stunning vintage 1960s lapel brooch of opulent aesthetic and unmatched sophistication depicts a very precious floral bouquet. Marquise diamonds simulate flowers and buds and baguette and round-fa](https://p1.liveauctioneers.com/2211/332393/179264034_1_x.jpg?height=310&quality=70&version=1717524154)
![Vintage 28.68Ct Diamond Platinum Lapel Brooch Pendant: Exuding classic elegance and astonishing glitter, this exquisite and versatile piece of jewelry is centered with a 1.70ct genuine round brilliant-cut diamond graded F-G color and VS1-VS2 clarity, and](https://p1.liveauctioneers.com/2211/332393/179264060_1_x.jpg?height=310&quality=70&version=1717524154)
![Antique Belle Epoque Platinum Multi Color Pearl Diamond Wreath Circle Pin Brooch: An antique solid platinum wreath brooch, with 10 round shape cultured pearls (4.6mm to 4.75mm each), and 20 old rose cut natural diamonds (G/H - VS2/SI2 ; 0.30ctw). Measures 32.15mm in diameter and we](https://p1.liveauctioneers.com/6100/333121/179831413_1_x.jpg?height=310&quality=70&version=1718216427)
![Vintage Platinum 1.98 ctw Baguette Marquise Old Cut Diamond Spray Flame Pin Broo: A vintage solid platinum pin brooch, with 73 old cut natural diamonds (F/G - VS1/VS2 ; 1.18ctw), and 5 baguette cut natural diamonds (G/H - VS1/VS2 ; 0.25ctw), and 3 marquise cut natural diamonds (G/H](https://p1.liveauctioneers.com/989/333726/180290169_1_x.jpg?height=310&quality=70&version=1718659051)
![Antique Art Deco Platinum Old Euro & Mine Cut Diamond Open Geometric Brooch Pin: An antique art deco solid platinum open pin brooch, with 38 old european and old mine cut natural diamonds (G/I - VS1/VS2 w/ a few SI1; 3.10ctw). Measures 21.20x41.80mm and weighs a total of 6.86 gram](https://p1.liveauctioneers.com/989/333726/180289720_1_x.jpg?height=310&quality=70&version=1718659051)
![Antique Edwardian French 18k Gold & Platinum 0.80 ctw Diamond Pearl Bar Pin Broo: An antique solid 18k yellow gold and platinum bar pin brooch, with 5 round shape cultured pearls (4mm to 4.6mm each), and 20 rose cut natural diamonds (G/H - VS2/SI2 ; 0.80ctw). Measures 70.30x4.60mm](https://p1.liveauctioneers.com/989/333730/180291262_1_x.jpg?height=310&quality=70&version=1718660119)
![Antique Victorian 14k Gold & Platinum GIA Old Sapphire Ruby Diamond Long Bar Pin: An antique solid 14k yellow gold & platinum bar brooch, with 4 Gia certified old round cut natural sapphires (0.80ctw), and 6 Gia certified oval cut natural rubies (1.10ctw ), with 13 old mine cut nat](https://p1.liveauctioneers.com/989/333731/180292846_1_x.jpg?height=310&quality=70&version=1718661243)
![Antique Art Deco Platinum 4.04 ctw Old European Diamond Filigree Bar Pin Brooch: An antique solid platinum pin brooch, with 22 old eurooean cut natural diamonds (H-L - VS2/SI2 ; 4.04ctw)Measures 15.60x76.25mm and weighs a total of 10.51 grams.](https://p1.liveauctioneers.com/989/333731/180292255_1_x.jpg?height=310&quality=70&version=1718661243)
![Vintage 6.69cts Old European Diamond Platinum Brooch Pin: Centered with a striking 2.70-carat Old European near colorless, I1 Clarity Diamond surrounded by Natural round diamonds anywhere from 0.75-carat to 0.03 carats. Measurements:44mm x 18mm](https://p1.liveauctioneers.com/6687/332297/179218642_1_x.jpg?height=310&quality=70&version=1717443039)
![Henry Dunay Yellow Gold Platinum Elephant Brooch: About the Item A cute elephant brooch by Henry Dunay. Made of 18k yellow gold. Tusks are platinum. Stamped with Henry Dunay maker's mark, a serial number and the hallmarks for 18k gold and 5% rutheniu](https://p1.liveauctioneers.com/5584/331564/178846960_1_x.jpg?height=310&quality=70&version=1717530687)
![Vintage Cartier Monture Platinum Diamond Brooch Pin Clip: About the Item Stylish elegant clip made of platinum and set with round brilliant cut and baguette cut diamonds (F-G color, VS1 clarity, 2.75 carats total). Measurements: 1 1/4" x 3/4" (3.5 x 2 centim](https://p1.liveauctioneers.com/5584/331564/178846985_1_x.jpg?height=310&quality=70&version=1717530687)
![Art Deco Diamond Black Onyx Platinum Pin Brooch Clip, 1910s: About the Item Classy and elegant Art Deco brooch created in the 1910s. The pin is made of platinum, black onyx and accented with Old European and single cut diamonds (H-J color VS clarity, total weig](https://p1.liveauctioneers.com/5584/331564/178847064_1_x.jpg?height=310&quality=70&version=1717530687)
![2.41ct Natural Sapphire Diamonds Platinum Brooch Platinum Baguette Ref 12326: 2.41ct Natural Sapphire Diamonds Platinum Brooch Platinum Baguette Ref 12326 $2500.0 PRODUCT DESCRIPTION Sapphire Flower Brooch .91ct Natural Blue Sapphire Round Cut, Clean Clarity 5.6mm diameter 1.50](https://p1.liveauctioneers.com/5584/331597/178874303_1_x.jpg?height=310&quality=70&version=1717530687)
![1.40ct Natural Diamonds Platinum Pin Edwardian Deco Vintage Ref 12329: 1.40ct Natural Diamonds Platinum Pin Edwardian Deco Vintage Ref 12329 $9500.0 PRODUCT DESCRIPTION Vintage Platinum Brooch Pin .50ct natural marquise & 1.40ct natural round diamonds G-color Vs-2 Clarit](https://p1.liveauctioneers.com/5584/331600/178875030_1_x.jpg?height=310&quality=70&version=1717530687)
![Platinum Estate Natural GIA Certified Fancy Diamond Emerald Pin Ref 12343: Platinum Estate Natural GIA Certified Fancy Diamond Emerald Pin Ref 12343 $12,000.00 PRODUCT DESCRIPTION GIA Certified Estate Platinum Emerald pin. GIA Certified: 1.07ct natural fancy Brown Green yell](https://p1.liveauctioneers.com/5584/330584/178268429_1_x.jpg?height=310&quality=70&version=1716924723)
![Vintage 1950's Blue Sapphire Diamond Platinum Brooch Pin, .30 CTW, 4.96 Gr: Vintage 1950's Blue Sapphire Diamond Platinum Brooch Pin, .30 CTW, 4.96 Gr Make a statement with this gorgeous one-of-a-kind brooch! Please let us know if you have any questions. Diamonds: 1 round bri](https://p1.liveauctioneers.com/5584/330569/178263029_1_x.jpg?height=310&quality=70&version=1716927854)
![Vintage 1950's Blue Sapphire Diamond Platinum Brooch Pin, .30 CTW, 4.96 Gr: Vintage 1950's Blue Sapphire Diamond Platinum Brooch Pin, .30 CTW, 4.96 Gr Make a statement with this gorgeous one-of-a-kind brooch! Please let us know if you have any questions. Diamonds: 1 round bri](https://p1.liveauctioneers.com/5584/331602/178878352_1_x.jpg?height=310&quality=70&version=1717530687)
![1.30ct Natural Diamonds Platinum Pin Edwardian Deco Vintage Platinum 12310: 1.30ct Natural Diamonds Platinum Pin Edwardian Deco Vintage Platinum 12310 $3000.0 PRODUCT DESCRIPTION Vintage Platinum Brooch Pin 1.30ct natural round diamonds H-color Vs-2 Clarity 2.6 inch long Hand](https://p1.liveauctioneers.com/5584/330583/178267902_1_x.jpg?height=310&quality=70&version=1716924723)
![2.00ct Diamonds cluster brooch pendant pin Platinum Estate Cluster Cocktail: Estate Prime Cocktail 2.00ct. Natural diamonds Brooch Cluster pin. Rounds, Full cut Brilliant. H-color Vs-2 Si-1 clarity. Platinum 16.8 grams. Measures: 1 x 2 inch Excellent made $7000 appraisal certi](https://p1.liveauctioneers.com/5584/331600/178874845_1_x.jpg?height=310&quality=70&version=1717530687)
![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/5584/330583/178268069_1_x.jpg?height=310&quality=70&version=1716924723)
![5.00ct Diamonds cluster brooch pendant pin Platinum Estate Cluster Cocktail: Estate Prime Cocktail 5.00ct. diamonds Brooch Cluster pin. Baguettes, Marquise & Rounds, Full cut Brilliant. F-color Vs-2 clarity. Platinum 27 grams. Measures: 1.95 x .97 inch Excellent made $15000 ap](https://p1.liveauctioneers.com/5584/331600/178874824_1_x.jpg?height=310&quality=70&version=1717530687)
![Vintage Brooch 18k Gold Diamond Flower Pin Estate Jewelry: About the Item An amazing vintage brooch, made of 18 karat yellow gold and platinum, featuring diamonds. The brooch is designed as a stylized bouquet of flowers or a fire torch. It comprises yellow go](https://p1.liveauctioneers.com/5584/331564/178846873_1_x.jpg?height=310&quality=70&version=1717530687)
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 […]