Most stones are natural, semi-precious gems, all fossils and meteorites, civil war bullets, ect. are authentic. The wire used is either sterling silver or 14ktgf, or argentium. (argentium is silver with a tarnish resitant agent, and actually has a higher silver content than sterling; at 93.5 instead of 92.5) Gently rub wire with a jeweler’s cloth to clean tarnish. I do NOT recommend using chemical cleaners or ultrasonics.
They should NOT be worn to bed, or while bathing/swimming, and it is not recommended to wear more than one pendant at a time.