![Antique Cushion Amethyst Diamond Platinum Brooch Pin: The large cushion amethyst of approximately 17.50 carats is held in a prong setting. Decoring the glamorous prongs are pavé settings, composed of (14) European round-cut diamonds, weighing approx. 1.](https://p1.liveauctioneers.com/2211/332393/179263910_1_x.jpg?height=310&quality=70&version=1717524154)
Platinum Brooches & Pins
![Antique Cushion Amethyst Diamond Platinum Brooch Pin: The large cushion amethyst of approximately 17.50 carats is held in a prong setting. Decoring the glamorous prongs are pavé settings, composed of (14) European round-cut diamonds, weighing approx. 1.](https://p1.liveauctioneers.com/2211/332393/179263910_1_x.jpg?height=310&quality=70&version=1717524154)
![Antique Art Deco Diamond Pearl Platinum Double Clip Brooch Pin: Measuring 21 x 57mm, the brooch is adorned with a variety of emerlad, marquise and round faceted diamonds with 6 cultured Pearls placed strategically. Diamonds weigh appx. 2.75 carats and are of G-H c](https://p1.liveauctioneers.com/2211/332393/179263836_1_x.jpg?height=310&quality=70&version=1717524154)
![Vintage 9.80cts Diamond Flower 18k Gold Platinum Brooch Pin: This breathtaking vintage brooch pin is from circa the late 1960s. This diamond flower brooch pin is crafted in solid 18K yellow gold and solid platinum. Featuring a gorgeous blooming flower with leav](https://p1.liveauctioneers.com/2211/332393/179263990_1_x.jpg?height=310&quality=70&version=1717524154)
![Antique Old European Cut Diamond Green Jade Platinum Floral Marquise Large Brooch Pendant: The Brooch features a central lush, vibrant apple green Genuine jade stone, adding a touch of natural beauty and a pop of color to the piece. The jade stone is carefully polished, Cabochon Marquise-sh](https://p1.liveauctioneers.com/2211/332393/179264016_1_x.jpg?height=310&quality=70&version=1717524154)
![Vintage Retro 15.69cts Diamond Platinum Floral Bouquet Lapel Brooch: The flowers on this enchanting bouquet are simulated by marquise diamonds approx. 4.85cttw, H-I color, VS2-SI2 clarity. The stems are enriched throughout with a combination of baguette approx. 2.65cts](https://p1.liveauctioneers.com/2211/332393/179263849_1_x.jpg?height=310&quality=70&version=1717524154)
![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)
![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)
![Antique Edwardian Platinum Top 18k Gold 0.55 ctw Diamond Milgrain Bar Pin Brooch: An antique edwardian solid platinum & 18k yellow gold bar pin brooch, with 28 old rose & european cut natural diamonds (G/J - VS2/SI2 ; 0.55ctw). Measures 10.65x56.9mm and weighs a total of 4.27 grams](https://p1.liveauctioneers.com/6100/333806/180355933_1_x.jpg?height=310&quality=70&version=1718746013)
![Oscar Heyman Sapphire Diamond Platinum Necklace Bracelet Brooch Pin Pendant: About the Item Fabulous timeless and elegant necklace created by Oscar Heyman in the 1960's. The necklace transforms into two bracelet and a brooch that can be also worn as a pendant. Stylish and vers](https://p1.liveauctioneers.com/5584/332704/179475079_1_x.jpg?height=310&quality=70&version=1718142737)
![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)
![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/5584/332483/179311235_1_x.jpg?height=310&quality=70&version=1718142738)
![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)
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 […]