French Art Deco Jadeite Jade Onyx Diamond Platinum Brooch

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...

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...

An exquisite example of Art Deco elegance and master craftsmanship, this circa 1930s platinum brooch encapsulates the glamour, geometry, and symbolic richness of the era. At its hear...

Weight: 11.31gr Metal: 18kt white gold and platinum Condition: Very Good Stones: 1 Diamond • Total carat weight: 0.80ct approximately • Cut: Old European • Colour: H/I • Clarity...