Hi! My name is Pamela Webb and I made the “Grounding Twig” set of necklace and earrIngs. The twigs are cast in solid Argentium Sterling silver, a low-oxidizing, low tarnishing alloy of Sterling silver. They were cast using a lost wax process, where one twig creates one piece and is destroyed in the process, so multiple copies of the same piece is impossible. Multiple castings are soldered together to create the composition you see here. The stones are multicolored, rosecut tourmalines. Thank you for your interest!