Opal is just over 1 centimeter in length Chain is adjustable 14-16 inches Sustainably made in-house in Portland, ORThe flashiest tiny fire Opal rests on a dainty gunmetal chain. With an adjustable chain, this piece rests at the throat. Nickel and lead-free. Perfect for layering with other pieces or on its own.Each piece of Altar’s jewelry line, Iron Oxide, starts as a wax model that is carved by hand, then is cast into a mold locally in Portland, Oregon using recycled metals. Once the metal is cast stones and crystals are set by hand. Iron Oxide uses very minimal packaging, being mindful of the use of plastic and its impact on our planet. Each order is shipped with minimal packaging and is recyclable.Please allow 5-7 days for delivery.