Is Tibetan silver safe to wear? The of is it on e-bay is MATERIAL: zinc alloy metal (lead free) . I want to wear some Tibetan silver around my neck. Is it safe if it says lead free.They say it's zinc alloy metal and that it's lead free.est Answer: An alloy is a mixture of two or more metals. Brass is an alloy of Zinc and Copper. The jewlery might be nothing more than Silver plated brass. Copper itself is commonly added to Silver and Gold alloys. Lead is not used in Silver alloys or brass. Silver fillings in teeth are a Mercury/Silver alloy.