The mexican fire opal in this necklace has a wonderful iridescence and you can see flashes of orange with traces of green. There is a small piece of natural matrix at the top of the stone. This necklace has been entirely made by me including the pendant bail and clasp. The pendant is 1.5 inches and hangs on a delicate 19 inch curb chain. All of my pieces are one-of-a-kind and this is the exact item you will receive. The pendant has my initials and the "sterling" stamp on the back.