![AS TIME BROOCH AND PENDANT LAPIS LAZULI DIAMOND CASTLE 18K: As Time Brooch and Pendant Lapis Lazuli Diamond Castle 18K Brand: As Time by ISHIKAWA NOBUKO Type: Pendant Material: 18K/750/Yellow Gold, 900/Platinum Color: None Size: None Accessories: None](https://p1.liveauctioneers.com/6177/332290/179215340_1_x.jpg?height=310&quality=70&version=1717432081)
Platinum Brooches & Pins
![AS TIME BROOCH AND PENDANT LAPIS LAZULI DIAMOND CASTLE 18K: As Time Brooch and Pendant Lapis Lazuli Diamond Castle 18K Brand: As Time by ISHIKAWA NOBUKO Type: Pendant Material: 18K/750/Yellow Gold, 900/Platinum Color: None Size: None Accessories: None](https://p1.liveauctioneers.com/6177/332290/179215340_1_x.jpg?height=310&quality=70&version=1717432081)
![Three Antique 10K & 14K Gold Stickpins: Comprising a 10K flower with rose cut diamond, an Art Deco pin with dogtooth pearl and old mine cut diamond, and an Art Deco 14K & Platinum pearl and diamond pin. 10K 0.4 dwt, 14K 0.8 dwt and platinum](https://p1.liveauctioneers.com/7247/333489/180080186_1_x.jpg?height=310&quality=70&version=1718412249)
![3 Antique Platinum & 14K Gold Stickpins: Comprising a platinum and 14K peridot and 2.5 mm diamond, a pin with Old European cut diamonds, and a gold filled antique Victorian pin with Morpho butterfly wing. Combined weight of the gold and plat](https://p1.liveauctioneers.com/7247/333489/180080174_1_x.jpg?height=310&quality=70&version=1718412249)
![Art Deco Platinum Frog Brooch with Diamonds and Emeralds: Art Deco Frog Brooch crafted in Platinum, featuring two Emeralds and Singe cut Diamonds weighing Approx. 0.30 carats. Graded colorless. Measurements: 1.0 x 0.9 inches. Total weight: 6.1 grams.](https://p1.liveauctioneers.com/7877/333606/180214149_2_x.jpg?height=310&quality=70&version=1718513102)
![Platinum 5.00 Ct. Diamond & Pearl Brooch: Platinum 5.00 Ct. Diamond & Pearl Brooch Weighing 18.0 grams Set with app. 5.00 Ct. of Diamonds H-J Color, VS1-SI3 Clarity Along with 3 Pearls 2.25 inches in length](https://p1.liveauctioneers.com/6970/332422/179277466_1_x.jpg?height=310&quality=70&version=1717584831)
![1950’s Platinum 11.00 Ct. Diamond Brooch: 1950’s Platinum 11.00 Ct. Diamond Brooch Weighing 32.0 grams Set with 7 Marquise Diamonds weighing app. 1.50 Ct. 16 Baguette Diamonds weighing app. 3.00 Ct. And 83 Round Diamonds weighing app. 6](https://p1.liveauctioneers.com/6970/332422/179277471_1_x.jpg?height=310&quality=70&version=1717584831)
![Ladies Art Deco Platinum, Diamond & Colombian Emerald Brooch: Ladies Art Deco Platinum, Diamond & Colombian Emerald Pin. Center Old Mine Cut Diamond: 1.80cts. Diamond Clarity: VS Color: K to L Total Daimond Weight Aprox: 3.5cts 6 colombian Emeralds Aprox: 0.75ct](https://p1.liveauctioneers.com/5870/332992/179756376_1_x.jpg?height=310&quality=70&version=1718238316)
![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/3780/331958/179092654_1_x.jpg?height=310&quality=70&version=1717192562)
![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)
![Antique Krementz Edwardian Platinum Top 14k Gold Diamond Etched Bar Pin Brooch: An antique solid 14k yellow gold and platinum pin brooch by Krementz, with 1 old european cut natural diamond (G - VS2 ; 0.06ctw). Measures 7.5x64.3mm and weighs a total of 4.42 grams.](https://p1.liveauctioneers.com/6100/333544/180157574_1_x.jpg?height=310&quality=70&version=1718402356)
![1940s Vintage 1.50 Carat Diamond: 1940s Vintage 1.50 Carat Diamond and Platinum Ladies Cocktail Fob Watch Case Material: Platinum Stone: Diamond Stone Cut: Round Cut Weight: 14.43 g Movement: Manual Wind Case Diions: Width: 0.85 i](https://p1.liveauctioneers.com/6732/331713/179665743_1_x.jpg?height=310&quality=70&version=1717912306)
![Art Deco Ladies Platinum & Diamond Pin.: Art Deco Ladies Platinum & Diamond Pin. Total Old Mine Cut Diamond: 4cts Daimond Clarity: VS Color: G to H Total Weight: 10.3grams 2" Long. (No. #BR642)](https://p1.liveauctioneers.com/5870/332992/179756343_1_x.jpg?height=310&quality=70&version=1718238316)
![Art Deco 18kt Gold and Platinum Brooch with CTW in Emeralds and Diamonds: Art Deco 18k yellow Gold with Platinum, featuring three Emerald cut Emeralds weighing Approx. 3.00 carats. Along with Old mine Diamonds weighing Approx. 4.00 Carats. H-J color, VS-SI clarity (one has](https://p1.liveauctioneers.com/7877/333606/180214210_1_x.jpg?height=310&quality=70&version=1718513102)
![Vintage BROOCH 18k Gold Diamond Flower Pin Estate Jewelry: Vintage Platinum 18 karat Yellow Gold Diamond Brooch An amazing vintage brooch, made of 18 karat yellow gold and platinum, featuring diamonds. The brooch is designed as a stylized bouquet of flowers o](https://p1.liveauctioneers.com/3780/331958/179092603_1_x.jpg?height=310&quality=70&version=1717192562)
![Late Deco French Platinum & Diamond Double Clip Brooch: GUILD laboratories' certificates are as accurate as GIA AND AGL certificates, and Sumer collection stands a hundred percent behind Guild laboratory's certifications. Hall Marks on pin](https://p1.liveauctioneers.com/5870/332992/179756593_1_x.jpg?height=310&quality=70&version=1718238316)
![Tiffany & Co. 2.75 Carat Round Brilliant F VS1 Diamond Pearl Platinum Brooch: Designer: Tiffany & Co Title: Tiffany & Co 2.75 Carat Round Brilliant F VS1 Diamond Platinum Brooch Metal: Platinum Gemstone 1: 2.75 Carat Diamond Number of Stones: 96 Color: F Clarity: VS1 Shape: Rou](https://p1.liveauctioneers.com/3780/329167/177974208_1_x.jpg?height=310&quality=70&version=1715878703)
![Art Deco brooch, platinum 850/000 an: Art Deco brooch, platinum 850/000 and GG 750/000 unmarked, tested, with 3 old-cut diamonds, total 0.26 ct W/VS-SI and diamond roses, l. 49 mm, 8.3 g](https://p1.liveauctioneers.com/609/331514/178829021_1_x.jpg?height=310&quality=70&version=1716985492)
![An Art Deco large-scale platinum brooch set with diamonds.: An impressive Art Deco large-scale platinum brooch (acid tested), adorned with geometric patterns and set with an old cut diamond weighing approximately 0.35 carats. Total diamond weight approximately](https://p1.liveauctioneers.com/6253/332449/179301283_1_x.jpg?height=310&quality=70&version=1717577449)
![Citrine diamond brooch around 1890: Citrine diamond brooch around 1890 RG 585/000 (Russian 56 hallmarked), silver and platinum, tested, with an oval faceted citrine 35 x 19 x 12 mm as well as 20 rose cut diamonds and 34 old cut diamonds](https://p1.liveauctioneers.com/609/331514/178829015_1_x.jpg?height=310&quality=70&version=1716985492)
![Antique Art Deco 5.50ct Diamond Platinum Filigree Geometric Open Brooch Pin: Genuine Round Cut Diamond bezel-set & prong set, total weight is 5.50 carats in total, G-H color, and VS1 clarity. The complete piece measures approximately 2.25 x 1 and is secured with a bar pin.](https://p1.liveauctioneers.com/2211/332393/179263825_1_x.jpg?height=310&quality=70&version=1717524154)
![ELWOOD VAN CLIEF Vintage Diamond Platinum Brooch Pin 17.50 Carats: Weighing approx. 28.4 grams and measuring 60mm x 32mm. This brooch is covered with (36) marquise diamonds, (30) baguette diamonds, and (32) round-faceted diamonds weighing cumulatively 17.50cts, (grad](https://p1.liveauctioneers.com/2211/332393/179264040_1_x.jpg?height=310&quality=70&version=1717524154)
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 […]