This lovely choker is a prime example of Mexican Silver with colored gem stones I am fairly certain that the green stone is malachite, but purple and lavender stone has me puzzled. I want to say it is Lapis-lazuli but it purple rather than blue. Maybe it was dyed. This is a great necklace, it consists of 17 lovely inch long segments of silver with two of the Malachite tears and one purple stone. The necklace tested sterling, It also thinks it says 925. It lays flat on your neck and I think to do it justice you should have a thin neck. (which leaves me out) It would be a perfect K-State necklace with the lovely purple stone. From Kansas for your lovely neck!