An antique American enamel & diamond flower brooch/pendant by Tiffany & Co, New York, ca. 1890.
18 karat yellow gold, perfectly enamelled rose in velvety purple. A dangling dewdrop, represented by an old European cut diamond 0.25 carat, set in platinum, adds a sparkle.
Hallmarked Tiffany & Co. this flower comes with an original period box marked Tiffany & Co.
In the language of flowers, the purple rose primarily expresses fascination, as the majestic flower is a symbol of enchantment.
Please also check this very similar white enamelled rose, signed Black, Starr & Frost
Source first photo: https-//www.kirsch-gestaltung.de/