This is an 9K yellow gold oval emerald surrounded by a halo of diamondss. The ring is stamped 9 CT, which is the English way of saying 9K gold. The emerald measures approximately 6.33mm by 4.94mm. The ring weighs 1.30 grams on a jewelry scale, and is a size 7. This ring can be sized if necessary. This ring will be insured for its full value in shipping. Thanks for looking!