![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)
Platinum Brooches & Pins
![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)
![Chaumet Retro Brooch 18k Gold Diamond Pin Estate Jewelry: About the Item A French chic retro diamond brooch by Chaumet Paris made of 18 karat gold and platinum. During the Retro jewelry era, scrolls became one of the most popular design motifs. In this brooc](https://p1.liveauctioneers.com/5584/331564/178846827_1_x.jpg?height=310&quality=70&version=1717530687)
![Henry Dunay Sabi Yellow Gold Platinum Earrings Brooch Set: About the Item An 18k yellow gold and platinum set of earrings and a brooch from Sabi collection by Henry Dunay. The earrings are knot shape with clip-on closure. The brooch has beautiful curves and i](https://p1.liveauctioneers.com/5584/331564/178847003_1_x.jpg?height=310&quality=70&version=1717530687)
![4.50ct Natural Diamonds Ninja Star Pin Platinum: Tri Star 4.50ct Natural Diamonds Star Form Pin Rounds, Brilliant cut. G-H-color Vs-2 clarity. Platinum 44.3 grams. Overall: 2.3 x 2.3 inch Excellent made Gorgeous Details $25,000 Appraisal Certificate](https://p1.liveauctioneers.com/5584/330584/178268245_1_x.jpg?height=310&quality=70&version=1716924723)
![Pearl Diamond Platinum Gold Double Clip Brooch Pin, French, 1930s: About the Item A pair of double clips created in France in the 1930s. Unusual and French chic, the pair is a great addition to your jewelry collection. Made of platinum (tested) and 18 karat (tested)](https://p1.liveauctioneers.com/5584/331564/178847104_1_x.jpg?height=310&quality=70&version=1717530687)
![10ct natural diamonds neoclassical brooch 18kt gold platinum Ref 12316: 10ct natural diamonds neoclassical brooch 18kt gold platinum Ref 12316 $12000.0 PRODUCT DESCRIPTION 10.00ct. diamonds large sized brooch pin. (Possible for pendant). Rounds, Full cut Brilliant. G-colo](https://p1.liveauctioneers.com/5584/330583/178267873_1_x.jpg?height=310&quality=70&version=1716924723)
![Vintage 5.00cts Diamond Platinum Wreath Brooch Pin: Measurements: 35mm x 33mm. Diamonds Weight Approx: 5.00 cttw](https://p1.liveauctioneers.com/6687/332297/179218554_1_x.jpg?height=310&quality=70&version=1717443039)
![Vintage GIA Blue Sapphire Diamond Platinum Star Flower Brooch Pin: The focal point of this piece is the Deep Blue Center Blue Sapphire, weighing approx. 1.70 carats, round cut with Prong Set. The petals are adorned with (95) Diamonds, an Old cut prong set, weighing c](https://p1.liveauctioneers.com/8053/328971/177317025_1_x.jpg?height=310&quality=70&version=1715118143)
![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/8053/328971/177316870_1_x.jpg?height=310&quality=70&version=1715118143)
![Henri Piquet Turquoise Diamond Platinum Pin Brooch Clip: About the Item Stunning turquoise and diamond safety pin created by Henri Piquet in France in the 1920s. Chic and elegant, the pin is a great addition to your jewelry collection. It is made of platinu](https://p1.liveauctioneers.com/5584/331564/178847102_1_x.jpg?height=310&quality=70&version=1717530687)
![Antique Deco Sailfish Aquamarine Diamond Platinum Brooch Pin: The center exposes a genuine fancy-cut flawless GIA pear-shaped Blue Aquamarine weighing approximately 30.00 carats and is accented with numerous round-cut diamonds,all approx. 5.00 carats in total, F](https://p1.liveauctioneers.com/6687/332297/179218577_1_x.jpg?height=310&quality=70&version=1717443039)
![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/8053/328971/177317328_1_x.jpg?height=310&quality=70&version=1715118143)
![Antique Deco 6.55cts Old European Diamond Platinum Filigree Brooch Pin: Antique Deco 6.55cts Old European Diamond Platinum Filigree Brooch Pin. This Handsome original antique art deco filigree Diamond brooch pin is crafted in solid platinum. The center diamond is bezel se](https://p1.liveauctioneers.com/8053/328971/177317055_1_x.jpg?height=310&quality=70&version=1715118143)
![Vintage 12.82cttw Diamond Platinum Double Clip Brooch Pin: Presenting an exquisite vintage jewelry piece: a double clip brooch pin showcasing an impressive 12.82 carat total weight of natural diamonds, all set in elegant platinum. This brooch is a testament t](https://p1.liveauctioneers.com/6687/332297/179218497_1_x.jpg?height=310&quality=70&version=1717443039)
![Estate Art Deco 15.00 Carats Diamond Platinum Double Clip Brooch: Measurements: 2.5" x 1.5". Total Diamonds Weight Approx: 15.00 carats](https://p1.liveauctioneers.com/6687/332297/179218646_1_x.jpg?height=310&quality=70&version=1717443039)
![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/8053/328971/177316896_1_x.jpg?height=310&quality=70&version=1715118143)
![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/8053/328971/177317087_1_x.jpg?height=310&quality=70&version=1715118143)
![Vintage 21.90cts Platinum Mixed-cut Natural Diamond tassel Brooch Pin: This beautiful Vintage 1960s diamond brooch pin is crafted in solid platinum. Displaying a delicate swirl design with exquisite details and exceptional artistry, this unique brooch pin is embellished](https://p1.liveauctioneers.com/8053/328971/177317113_1_x.jpg?height=310&quality=70&version=1715118143)
![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/8053/328971/177317115_1_x.jpg?height=310&quality=70&version=1715118143)
![Vintage Natural Blue & Yellow Sapphire Floral Bouquet Platinum Lapel Brooch: his 1950s Retro flower bouquet of sophisticated and opulent aesthetic is artfully crafted in platinum. It is adorned with twelve cushion-cut and square-cut natural sapphires (no heat treatment) weighi](https://p1.liveauctioneers.com/8053/328971/177317129_1_x.jpg?height=310&quality=70&version=1715118143)
![Suzanne Belperron Dents de Loup Clip Brooches Diamond Gold Platinum: About the Item A pair of magnificent double clips designed by Suzanne Belperron and manufactured by company B. Herz in Paris between 1932 and 1940. The piece comes with an authentication certificate f](https://p1.liveauctioneers.com/5584/330568/178262556_1_x.jpg?height=310&quality=70&version=1716924723)
![A diamond and platinum brooch: A diamond and platinum broochof foliate motif, featuring 12 round brilliant-cut diamonds ranging from 1.04 carats to approximately 0.78 carat, framed by 30 marquise-cut diamonds and accented by a stem](https://p1.liveauctioneers.com/306/333073/179802200_1_x.jpg?height=310&quality=70&version=1718146324)
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 […]