Platinum Diamond Stud Earrings With a certificate of authenticity, and two K14WG silicone backings. I dropped one of them outside, and for some reason, only the backing was stuck to the back of my ear. I'm very shocked because they cost about 40,000 yen. The certificate states 0.3ct, but this is the total carat weight for both earrings. - Material: Pt900 - Stone: Diamond 0.15ct There are no noticeable scratches or stains, but this is a used item that has been stored at home. Please understand this before purchasing. Thank you for looking.