I’ve never worn this; it’s the wrong size for me. This is from JTV and is really well constructed with gold over sterling but not sure what purity of gold. They don’t sell cheap jewelry and I think this may be Lapis Lazuli. opal. Size 10 and the stone with setting is 1/2” in length and width. I just added the matching earrings which are also never worn and mint. They measure 1” long; so pretty. I am listing a lot of jewelry and I’m happy to combine shipping.