Is this Native American and what kind of stone?

What kind of stone is this? Is it Native American? It is signed “sterling” and “0925” on the clasp.

Hello. Yes, this looks like a Navajo made necklace. Leaf work was very popular in the 1970s and 80s. The stone looks like it could be chrysocolla which looks very similar to turquoise and can have a Bisbee look like the middle stone of your necklace. Thank you for sharing.