This is a turquoise and bone necklace with a stone pendant. I do not know what the stone is. I am also not an expert on turquoise or bone, so I can't say 100% that this is genuine. I think it is, but I don't know for sure. I tried to include plenty of photos for you to see what you are buying. If you have any questions or need more photos, please reach out to me. The clasp is marked 925. I apologize I don't know more about this piece, but hopefully, the photos help. Thanks for looking!