Clnicas Humana Clnicas Humanas Sterling Silver Oval Silver Cosmos Dangle with Amethyst Center Earrings. This amazing Sterling Silver collection with amethyst is designed by a Californian artist who has partnered with silversmiths who are world renowned for their craftsmanship. Arts and creativity are a significant part of the culture, and a community of highly skilled Balinese silversmiths create this exceptional jewelry. The expertise of these craftsmen is readily apparent in the fine detail of this jewelry, and the original designs embrace motifs from around the world. The semi precious amethyst stone is the traditional stone for February birthdays. Metals: Solid sterling silver, 18 or 22 karat gold over silver. Materials: Semi precious stones and natural elements. Earrings: measure from 1 2 inch to 2 inches. Earring wires are solid sterling silver.