Poland, 19th–20th centuries Material: gold, enamel, diamonds; brass mounting prongs Techniques: casting, cutting, engraving, enameling, stone setting, soldering. Weight: "ZL" - 1.68 g. "K" – 1.05 g. Crown - 0.45 A set of three decorative studs designed to be attached to the surface of a luxury item—presumably a jewelry box, case, album cover, wallet, or leather goods. The largest clasp t...