Necklace with natural cooper on chrysocolla

Necklace long as 23inches, with natural copper in chrysocolla with exquisite black color combination of light green-blue and dark brown copper mixed amazingly together. I have added lace agate, rutilated quartz, moss Aquamarine, moonstone and topaz all in sterling silver wires. Chrysocolla Bacan stone is known as the scientific term Chrysocolla in chalcedony or translated into Indonesian, namely krisokola quartz. Bacan stones come from Kasiruta Island which is reached as far as 3-4 hours from Bacan Island, South Halmahera, Maluku. Because of the stunning appearance and color of the stones, Bacan stones are often sought after by people as jewelry The identical green, bluish, and blackish colored Bacan / chrysocole stones are caused by the process of changing the mineral element copper (Au) porphyry. The formation of porphyry deposits is related to hydrothermal processes. These deposits are carried by a solution of high temperature water and deposited under the surface. These porphyry de