Marcus & Co. Opal Diamond Gold Platinum Brooch Pendant

A Mid-20th Century 18 karat gold and platinum brooch with diamonds by Tiffany & Co. The flower brooch has six unique, blooming petals studded with diamonds and framed with textured g...

An American Art Deco platinum brooch with diamonds by E. M. Gattle & Co. The brooch has 168 old European-cut diamonds with an approximate total weight of 4.50 carats, and 5 square-cu...

An Antique 18 karat gold and platinum-topped gold brooch with diamonds. The open maple leaf motif has delicate diamond accents down the center stem, and three stunning round old Euro...

This diamond crescent brooch by Tiffany & Co. New York dates from circa 1890-1900. The delicate crescent is set with 21 old European and old mine-cut diamonds mounted in platinum-topped gold. Set with fine, well-cut diamonds in a minimum of platinum and gold, this heavenly crescent was divinely shaped and executed by Tiffany & Co. designers and artisans. Product Details: Item #: BO-21317 Artist: Tiffany & Co. Country: United States Circa: 1890-1900 Dimensions: 2.75" length, 1" width. Materials: 21 old European and old mine-cut diamonds (approximate total weight 9.20 carats): Platinum-topped 18K gold mount Signed: Tiffany & Co. Macklowe Gallery Curator's Notes: Throughout the 19th century, British astronomers made many advances, building on the enormous base of precise observations provided to them by their predecessors in the 1700s. Using the new technique of spectroscopy, they worked to determine the composition of heavenly bodies, while breakthroughs in understanding the geology of the earth -many made by passionate amateur scientists as diverse as surveyors and Anglican clergy - helped them discover the facts about the nature of the moon and newly discovered planets. It was in fact an Anglican priest who first advanced his well-supported theory that the earth was indeed more than a billion years old. Astonishing early imaging of the moon, as well as the appearance of the Great Comets of 1843 and 1882 that remained for months burning in the sky above England, helped stoke popular fascination with heavenly bodies. Star, crescent, sunburst and comet jewelry...

Dating from circa 1997, this 18K gold Tiffany & Co. bow brooch is set with over 7 carats of diamonds. It is designed as a highly three dimensional bow of five loops pavé-set througho...

An Antique 18 karat gold and platinum brooch with demantoid garnets, diamonds and ruby. The brooch has 38 demantoid garnets with an approximate total weight of 1.10 carats, 34 diamon...

Brooch in platinum, dog head hallmark. Delightful antique brooch, it is adorned in the center with a round opal cabochon shouldered on either side with two antique brilliant-cut diam...

Designed as a pansy flower with layered furling platinum and yellow gold petals. Featuring round brilliant cut diamonds prong and bead set in platinum. Weighing approximately 1.18 ca...

Opal & Diamond Drop Brooch set in Platinum Approx Opal drop Weight: 26.32 Cts Approx Oval Opal: 6.00 Cts Approx Diamond Weight: 8.59 Cts Measureme...

Style: Pendant, Brooch, Pin & Necklace Metal: Yellow Gold Metal Purity: 18K Main Stone Cut: Round Shaped​​​​​​​ Material: Gold Diamond Clarity: VS1-VS2 Total Carat Weight: 0.26 Carat Measures: 2 Inches Weight: 15.0 grams Includes: 24 Month Brilliance Jewels...

Material: 14k Yellow Gold Diamond Details: Approx. 5ctw of round and baguette cut Diamonds. Diamonds are G/H in color and VS in clarity Measurements: 24mm x 9mm x 60mm Total Weight: ...

Tiffany & Co Diamond & Gold Floral motif Brooch 9 graduated round cut diamonds approximately set in 14k yellow gold. Measurements: 2.75" long Signed Tiffany