These European Art Nouveau 18K gold chrysoprase or green chalcedony cuff links? date from c. 1900. They are designed as double oval links, each set with a sugar loaf chrysoprase cabochon within a polished, chased and engraved surround of interlocking scrolls and beads against a matte finish, joined by bar links.? These unique, beautifully-crafted cuff links in rich green and gold are a subtle and artful sleeve adornment.