Rating Newest Oldest. Best Answer: They're silver Made from Tibet. Tibetan silver is used primarily in jewellery components, and is similar to pewter-an alloy of copper, and sometimes tin or nickel, with a small percentage of pure silver.Its overall appearance is of aged silver, but it can be polished to provide highlights on complex castings.eport Abuse. Tibetan silver is an alloy of copper, and sometimes tin or nickel, with a small percentage of pure silver. safe: yes long lasting: probably might turn you skin green because of the copper hope this helps!