99.9" silver. This jewelry is handcrafted using Precious Metal Clay (PMC3). It is a clay product composed of silver and a proprietary organic substance. Each piece is hand formed using textures, molds, or objects from nature. The piece is then carved, dried, sanded, and sometimes embellished. It is then fired at 1650 degrees F for 2 hours. The organic material burns off and the piece shrinks approximately 13%. The piece is now 99.9% silver! Each piece is then wire brushed, polished, and tumbled in steel shot. Any additional findings or chains are Sterling Silver.