Wrong review
I bought it for a gift for my daughter who wanted a rough of her Birthstone but this is not it. It looks like a tiny rock. No color change at all, not even under a light! Not worth the $40. I  contacted the seller for  refund and one response asking if I put it under a light, I responded yes again asking for a refund and never received a response and no refund.
Rating: 1 stars