A c1900 Art Nouveau ring with an asymmetrical spiral form of rose cut diamonds swirling around a fan
A c1900 Art Nouveau ring with an asymmetrical spiral form of rose cut diamonds swirling around a fancy brown-pink old European cut diamond. Natural pink-toned diamonds are exceedingly rare, particularly in antique jewelry. Built in platinum and 18K yellow gold. French hallmarks. (online) -- source link