![18K & Platinum 2.25 Ct. Diamond Brooch: 18K & Platinum 2.25 Ct. Diamond BroochWeighing 6.9 gramsSet with an app. 2.10 Ct. European-cut DiamondI Color, I1 ClarityRing Size 8](https://p1.liveauctioneers.com/1692/330287/178196190_1_x.jpg?height=310&quality=70&version=1716319455)
Platinum Brooches & Pins
![18K & Platinum 2.25 Ct. Diamond Brooch: 18K & Platinum 2.25 Ct. Diamond BroochWeighing 6.9 gramsSet with an app. 2.10 Ct. European-cut DiamondI Color, I1 ClarityRing Size 8](https://p1.liveauctioneers.com/1692/330287/178196190_1_x.jpg?height=310&quality=70&version=1716319455)
![Art Deco Platinum, Diamond Emerald Dress Clip: Art Deco platinum, diamond and emerald dress clip or brooch, this exquisite piece features an approximate 10mm carved fluted natural carved tear drop shaped emerald top presented on a highly stylized](https://p1.liveauctioneers.com/5855/332516/179331489_1_x.jpg?height=310&quality=70&version=1717634106)
![PLATINUM CIRCAL FLORAL DIAMOND BROOCH: Platinum diamond circle brooch Weight 9.16g. / Weight: 9.16g / Measurements: 1.25"H x 1.25"S / Provenance: From the descendants of Lollie Oliver, Pittsubugh PAPAYMENT DISCLAIMER ****SEE TERMS AND COND](https://p1.liveauctioneers.com/49/333222/179889687_1_x.jpg?height=310&quality=70&version=1718309265)
![Diamond, 18k Yellow Gold, Platinum Ribbon Brooch.: Diamond, 18k Yellow Gold, Platinum Ribbon Brooch. Designed as a ribbon, featuring thirty-two round brilliant-cut diamonds weighing a total of approximately 3.75 cttw., set in a platinum, 18k yellow go](https://p1.liveauctioneers.com/1098/331812/178995681_1_x.jpg?height=310&quality=70&version=1717112707)
![Diamond, Platinum Brooch.: Diamond, Platinum Brooch. Featuring eighty-five baguette-cut diamonds weighing a total of approximately 6.25 cttw., accented by forty-one full-cut diamonds weighing a total of approximately 2.50 cttw.](https://p1.liveauctioneers.com/1098/331812/178995704_1_x.jpg?height=310&quality=70&version=1717112707)
![Diamond, Platinum, 18k Yellow Gold Brooch.: Diamond, Platinum, 18k Yellow Gold Brooch. Featuring one hundred and nineteen full-cut diamonds weighing a total of approximately 6.35 cttw., set in a platinum, 18k yellow gold textured exotic flower](https://p1.liveauctioneers.com/1098/331812/178995674_1_x.jpg?height=310&quality=70&version=1717112707)
![Art Deco Platinum Diamond Brooch Gold Enamel Amethyst 14k Yellow: This is a beautiful Art Deco brooch, The frame is crafted from 14k yellow gold with platinum accent. It features a long triple layer oval shaped frame in yellow with black enamel surface and a large o](https://p1.liveauctioneers.com/1692/330287/178255951_1_x.jpg?height=310&quality=70&version=1716385067)
![Gold, Platinum, & Diamond Brooch: Ladies 18K yellow gold and platinum brooch featuring nineteen (19) rose cut diamonds approximately 0.38 carats together, Clarity-I1, Color-I. The brooch XRF tests 18K gold on the back and 90% pla](https://p1.liveauctioneers.com/525/332539/179372017_1_x.jpg?height=310&quality=70&version=1717698500)
![Antique Art Deco Platinum Diamond and Pearl Brooch / Pendant: Immerse yourself in the glamour and sophistication of a bygone era with our exquisite Art Deco Platinum Pearl & Diamond Brooch / Pendant . Crafted during the illustrious Art Deco era, this brooch is a](https://p1.liveauctioneers.com/8264/330485/178188674_1_x.jpg?height=310&quality=70&version=1718090683)
![Platinum Topped Gold and Diamond Star Brooch / Pendant, E.M Gattle & Co.: Platinum Topped Gold and Diamond Star Brooch / Pendant, E.M Gattle & Co.in a six-point star motif set to the center with an old European cut diamond (5mm) and bezel set old European cut diamonds, the](https://p1.liveauctioneers.com/250/333351/179989201_1_x.jpg?height=310&quality=70&version=1718312227)
![Platinum, Gold, & Diamond Art Deco Brooch: Ladies platinum and 14K white gold art deco brooch featuring a round brilliant diamond approximately 0.26 carats, Clarity-VS1, Color-H. The brooch is marked "14K" and XRF tests 14K on the ba](https://p1.liveauctioneers.com/525/332539/179372103_1_x.jpg?height=310&quality=70&version=1717698500)
![Art Deco Diamond Pendant Pin Old Mine Cut Platinum 14k Floral Filigree: This is a stunning Art Deco pendant or brooch, it is crafted from platinum with 14k white gold pin. The piece features a long octagonal shape frame with a fleur de lis flex bail decorated with diamond](https://p1.liveauctioneers.com/1692/330287/178391850_1_x.jpg?height=310&quality=70&version=1716490090)
![Art Deco Platinum and Diamond Bow Brooch: a lovely antique brooch in a stylized bow with two dangling ribbons, containing numerous round single cut diamonds weighing approximately 1.25 carats total. The metal was tested and found to be platin](https://p1.liveauctioneers.com/6253/332449/179301280_1_x.jpg?height=310&quality=70&version=1717577449)
![Estate Custom Made 14.22 Cttw Diamond Platinum Pendant/Brooch: Estate Custom Made 14.22 Cttw Diamond Platinum Pendant/Brooch Dimensions: Estate Brooch/Pendant, 17 Pear Shape Diamo](https://p1.liveauctioneers.com/6970/332422/179276944_1_x.jpg?height=310&quality=70&version=1717584831)
![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/3780/329167/177973872_1_x.jpg?height=310&quality=70&version=1715878703)
![Vintage Platinum and Diamond Circle Brooch: Vintage Platinum and Diamond Circle Broochthe filigree circle brooch with floral trellis motif, set with old European cut diamonds weighing approximately .40 total carat (G-H color, SI1-SI2 clarity),](https://p1.liveauctioneers.com/250/333351/179989200_1_x.jpg?height=310&quality=70&version=1718312227)
![Art Deco Platinum 19.80 Ct. Diamond Brooch: Art Deco Platinum 19.80 Ct. Diamond BroochWeighing 26.7 gramsSet with an app. 2.00 Ct. DiamondI Color, SI2 ClarityAlong with 184 European-cut Diamonds weighing app. 12.80 Ct.And 74 Baguette Diamonds w](https://p1.liveauctioneers.com/1692/330287/178196213_1_x.jpg?height=310&quality=70&version=1716319455)
![BOUCHERON 18k Gold Retro CLIP Pin Brooch Diamond Sapphire: Boucheron, Paris Sapphire Diamond 18 karat Yellow Gold Platinum Clip Chic Retro clip created by Boucheron Paris in 1930s. Made of 18 karat yellow gold, the clip features approximately 10 carats of inv](https://p1.liveauctioneers.com/3780/331958/179092255_1_x.jpg?height=310&quality=70&version=1717192562)
![Estate English Syn Sapphire Diamond .70 Cttw Platinum Brooch: Estate English Syn Sapphire Diamond .70 Cttw Platinum Brooch Estate Brooch, 1 Pear Shape Synthetic Sapphire, 14 Old European Cut Di](https://p1.liveauctioneers.com/6970/332422/179277010_1_x.jpg?height=310&quality=70&version=1717584831)
![VAN CLEEF & ARPELS ENSEMBLE DE DEUX BROCHES 'ROSES' RUBIS ET DIAMANTS: VAN CLEEF & ARPELS ENSEMBLE DE DEUX BROCHES 'ROSES' RUBIS ET DIAMANTS Details Round rubies, round brilliant-cut diamonds, 18k yellow gold and platinum (French marks) for the diamond brooch and 18k yel](https://p1.liveauctioneers.com/6670/333048/179794353_1_x.jpg?height=310&quality=70&version=1718372539)
![Antique Art Deco Platinum 7.24 ctw Diamond Large Sapphire Filigree Brooch Pin: An antique. art deco solid platinum bar pin brooch, with 195 old european/rose/single cut natural diamonds (G-L - VS1-SI1; 7.24ctw), and 2 custom bullet cut synthetic sapphires, with straight baguette](https://p1.liveauctioneers.com/6100/333121/179832123_1_x.jpg?height=310&quality=70&version=1718216427)
![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)
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 […]