We use the finest supplies to make our jewelry. We use Grade AA and A Natural Pearls and Swarovski Crystal Pearls-the very best man-made pearls. We use Natural gem stones from the earth, precious and semi precious culled from all over the world. We use Sterling Silver-92.5% silver and 7.5 copper-NOT silver plated. We use Argentium Silver~a little more expensive but it severely inhibits tarnishing. All our glass Dichroic pendants and enameled beads are made by us personally and are annealed in a kiln or crock pot and the enamels we use are lead free. (Annealling is the process of heating glass and slowly cooling it to make it stronger and less brittle.) I sometimes use brass wire and artists wire to wrap a cabochons or I use brass findings. If that is the case, it will say so in the description.