This is all sterling silver and handcrafted by one of our Navajo artist. Each piece of Lazuli jewelry is handcrafted and signed by our Native-American artists. The stones that are inlayed in this hummingbird are, red and orange oyster shell, Kingman turquoise, lapis, opal, mother of pearl and green turquoise. . Color may very cause everything is one-of-a-kind. This piece comes with a certificate of authenticity.