PLATINUM & 18K GOLD CEYLON STAR SAPPHIRE DIAMOND & RUBY BROOCH: An important 18K yellow gold Russian brooch set with a large star sapphire cabochon surrounded by diamonds and knife-set rubies in an enamel setting. The bezel-set cabochon-cut star sapphire weighs approx. 19.15 cts. and displays as translucent, high dome with a 6-ray star, blue in hue. Accented by 16 marquise/round native cut rubies weighing approx. .55 cts. rated VS in clarity. The knife-set rubies contrasted against white enamel & surrounded by 144 round rose cut diamonds weighing approx. .36 cts, rated VS in clarity and H-I in color. With a bar pin closure having a French patent mark ''Brevete Sans Garantie Du Government'' on the clasp. Circa 1900/1915. Approx. 1'' l x 1.25'' w. and weighing 13.3 gms. Sold with 2021 Florida Diamond Appraisers GIA graduate's appraisal for $25,000.00.

The clutch wheel was replaced c. 1915 in France, bearing the French brevet.