This necklace is made with real gemstones, not man made or lab created. Australian Chrysocolla is a very rare stone that originated in Australia. The stones have blue, black, bronze, and red color in them, and they are beautiful. The clasp is solid .925 sterling Silver with a rhodium plate. It has a magnet for easy closure. The necklace is 20 inches in length. The necklace in the photos is the one you will receive! :) Brand new. J10