I struggle to get rid of this too. It is just a stunner with it's old mine cut diamonds and the intricate/hand made details of the ring. It is a size 4.5 and is sizable. The back of the shank is rather thin but it is in lovely/pre-loved condition. The ring was sold to me a few years ago through Ebay. The seller, I believe was wrong in listing it as a sapphire-but it could, in fact, be a green sapphire. It actually looks to be an emerald as I use to sell fine jewelry years ago and it has many of the properties and emerald has. I don't think it is chatham or synthetic. It has some fine abrasions on it but you cannot see them to the naked eye. Pictures don't do it justice. The center stone is approx. 5mm and the 8 omc diamonds are approx. 2mm each. Hard to guess a ctw. I am cushioncutnut on Pricescope and have sold on here and the bistro many times. Paypal from US buyers only. This is not returnable so any questions or if you are not getting a response from me from this site, please email me: [email protected] Thank you!