Platinum Diamond Circle Pin

This vintage platinum pin is adorned with 29 round diamonds and green onyx. The diamonds weigh 0.58 carats and graded G-H in color and VS in clarity. The pin measures 35.09mm in dia...

Platinum 6.60 Carat Natural Round Diamond Circle Pin Brooch Metal: Platinum Weight: 9.06 grams Diamonds: 20 round natural diamonds approx. 6.60 CTW G-H VS Diameter: 35mm

Platinum 3.00 Carat Natural Diamond Circle Pendant Brooch Pin Metal: Platinum Weight: 10 grams Diamonds: Approx. 3.00 carats natural round G-H VS round diamonds Diameter: 33mm Note...

1950's diamond bow pin handcrafted in platinum. The brooch features 21 round brilliant cut diamonds and 54 baguette cut diamonds weighing approximately 3.00 carat total weight. The d...

This breathtaking wreath brooch by Maurice Tishman was crafted in solid platinum & 14k white gold pin. The wreath is adorned with old single & transitional cut diamonds that alternat...

This exquisite Edwardian antique brooch is crafted from 14-karat yellow gold and platinum, featuring intricate filigree detailing. Designed in a classic circle shape with a 30mm diam...

Step into the elegance of the Antique Edwardian Era with our Platinum Sapphire and Diamond Circle Bow Lapel Pin.

Here we have a truly marvelous Maurice Tishman circle pin brooch that is very well crafted from solid platinum.

Beautiful brooch pin crafted in platinum featuring 104 round brilliant cut, baguette and single cut diamonds weighing approximately 3.3 carats total, F-G color, VS clarity, and 3 eme...

Here we have a truly breathtaking vintage diamond wreath pin brooch or pendant crafted in solid platinum. The brooch features approximately 3.96 carats of fine quality diamonds in wh...

Add a touch of vintage charm to your jewelry collection with this stunning Tiffany & Co. Diamond Brooch Pin. The piece features a circle design with black enamel and art deco details...

Beautiful Art Deco Sapphire and Diamond Platinum Circle Brooch securely Hand set with 15 French-cut Sapphires and 15 Diamonds, approx. 0.60tcw. Hand crafted Platinum mounting. Measur...

The open work delicate leafy garland motif surrounds the outer edge of the platinum circle which is interrupted by eight stations for the bead set diamonds.

Circular brooch features eight sapphires weighing in total approximately 2.40 carats Round cut and very well matched with violetish blue color With transitional cut diamonds weighi...

Material: Solid .900 Platinum w/ Solid 14k White Gold Pin & Clasp Total Weight: 6.6 Grams Overall Diameter: 32mm (1.26") Thickness: 3.7mm (at the circle wreath), 2.8mm (at the dangle...

One platinum and 14 karat yellow gold early twentieth century diamond circle brooch set with thirty (30) old European cut diamonds, graduating in size, approximately 2.00 carat total...

Mid-Century Platinum Natural Diamond Circle Pin Brooch Metal: Platinium Weight: 8.83 grams Diamonds: Approx. 2.25 CTW G-H VS round, baguette & marquise diamonds.

This graceful Art Deco Style brooch, features 2.90 carats of European cut diamonds in a platinum setting with a 14K yellow gold pin. It is finished with fine milgraining on the board...

A beautiful and articulate Tiffany & Co. pin set with round brilliant-cut diamonds, set in Platinum. Stamped Tiffany & Co., Plat.

For sale is a classic Estate Diamond & Sapphire Circular Pin! Featuring sixteen (16) Round Brilliant Cut diamonds, measuring 2.75 mm each average, weighing a total of 1.00 carats. D...

Authentic c.1940's "Boucheron Paris" diamond and platinum circle crown top double pin brooch.

Natural Diamond Brooch Pin Platinum Circle Bow Vintage Art Deco 2.65 TDW This incredible highly collectible circa 1930s piece is finely crafted in Platinum (carefully tested and gua...

Here we have a truly elegant looking antique wreath pin brooch that was crafted from solid platinum during the art deco period. It consists of fine quality diamonds and black onyx ge...

This absolutely gorgeous antique brooch was crafted during the Edwardian era from solid 18k yellow gold and platinum. It features an incredible circle of pearls and diamonds that alt...

Art Deco Circa 1925 Platinum J.E. Caldwell Sapphire and Diamond Circle Pin Classic, Art Deco Circa 1925, diamond and sapphire circle pin by the famous J.E.

The pin utilizes black onyx for an extremely cool geometric design of custom cut onyx circle.

The pin is designed in an elegant circle each diamond expertly let using four prongs each and enhance by beautiful bright cutting behind and around each diamond.

This fabulous estate brooch is crafted in platinum and features 2.00-2.50ct. apx. T.W. of round brilliant diamonds with VS1-VS2 clarity and G-H color. Classic and elegant! Primar...

Sparkling diamond circle pin. Made and signed by TIFFANY & CO. 2.25 cts. of brilliant white diamonds, set in platinum with original 14K pin. 1 1/4 inch diameter.

Feminine and graceful antique diamond circle pin. Set in platinum with applied square cut sapphire bow.

Platinum with 18 karat yellow gold backing Art Deco circle pin with pendant option consisting of Old European and Old Mine cut diamonds having a total weight of approximately 3.50 ca...

This classic style pin can be worn as a pendant as well. These ideally cut diamonds total 6 carats and are spectacularly brilliant!

A timeless diamond and sapphire pin by famed maker Tiffany & Co.! Crafted in platinum, this gorgeous pin features 2ctw of glittering Single Cut diamonds and 1ctw of gorgeous French C...

Brilliant Art Deco circle pin, set in platinum. Vivid emeralds (4.0cts) alternate with sparkling white diamonds.

J.E. Caldwell Art Deco Platinum and Diamond Circle Pin. The pin is bead set with 22 old European cut diamonds, approx. total wt. 1.50cts., G-H color, VS clarity, #G8943, diameter 1",...

Open circle with bow motif pin, set with circular-cut diamonds and a single marquise-shaped diamond weighing approximately 3.70 total carats, with an inner circle of French-cut sapph...

Platinum Art Deco circle pin featuring a bow design and consisting of 43 bead set Old European cut diamonds graduating in size, having an approximate total weight of 2.11 carats, 16 ...

Edwardian Sapphire and Diamond pin with Bow set in Platinum

Foliate circle pin, designed as a diamond-set open circle with entwined diamond-set leaf motifs at center with calibre-cut emerald accents, with 62 full-cut diamonds weighing approxi...

Tested for platinum, white gold pin stem. Pin stem could be removed for spectacular pendant. 6.2 dwt.

Platinum circle brooch by Tiffany & Co, set with blue sapphires and approx. 1.90ctw in diamonds. Brooch is 27mm in diameter. Weight is 6.5 grams. Marked Irid. Plat, Tiffany & Co

Diamond stylized foliate motif open circle pin, set with 72 round diamonds weighing approximately 3.60 total carats, mounted in platinum, numbered 10877, signed Cartier. 1.37" diamet...

Platinum Art Deco ruby and diamond circle pin.

A Victorian diamond crescent and flower brooch in silver and gold, ca. 1880s. The crescent has a beautiful design with a flower attached in the centre, creating an aesthetic and sy...

Emerald ring in 14K Gold which perfectly goes with your personality and also helps you to improve your creativity. Designed with emeralds and diamonds that makes it a perfect fit to ...

Antique French Floral Design Platinum Diamond Tiara with Detachable Brooch This magnificent French tiara, crafted in luxurious platinum, is a masterpiece of elegance and refinement....

Lovely Delicate Edwardian Amythest, Diamond and Pearl Brooch from the early 1900's. Unsigned but high quality American manufacture. Platinum topped gold with diamonds and natural pea...

Antique La Belle Époque natural pearl and diamond pendant necklace in platinum and gold, Portuguese, circa 1900. This garland jewel of geometric, floral and foliate motifs is millegr...

A special piece made in Cartier's Paris workshops, a diamond studded gold evening purse. In excellent condition, this purse opens to reveal a mirror and more storage space than expec...

This exquisite vintage brooch from the 1960s is a true representation of timeless elegance. Crafted in luxurious 18k white gold, the piece showcases a breathtaking floral design ador...

Designer: Oscar Heyman Metal: Platinum Style: Art Deco Year Of Manufacture: Circa 1920s Item weight: 26.7 g Length: 7.25 inches Gemstone: Sapphire With 7 CT Round Brilliant Cut Diamo...

Here we have a stunning antique brooch or pendant which was crafted in solid 14k yellow gold during the Victorian period. It features a gorgeous, approximately 1.0 carat, super fine ...

Beautiful, antique white gold diamond brooch as a bouquet of flowers with a bow. Set with a lot of old cut diamonds. Including certificate of authenticity and box.

Vintage 1930's Art Deco Platinum Diamond and Sapphire Bracelet 2.00ct - The bracelet contains 21 European cut diamonds and an additional 20 single cut diamonds for a total approximat...

Victorian diamond pendant/brooch. Centrally set with a cushion shape old mine diamond in an open back cut-down setting with an approximate weight of 1.35 carats, adorned with twenty ...