Lovely 3 stone emerald style gem ring with clear stone detailing swirling around. Band measures 16.9mm in diameter and has been sized in accordance with the ring size guide in the last picture. Sorry, I do not have any information regarding the metal or gem stone content of any of the jewelry pieces in my closet. ***Bundle and Save!*** Likes may receive offers, but bundles of 2 or more items get automatic 20% off! Bundles of 6+ items will receive FREE SHIPPING!!! (just let me know when you're finished adding to your bundle, and I'll put through the offer)