I am not an expert on the 4Cs. No holds. I will not answer questions after a price reduction or after purchase. Price reductions are only for those who can purchase within 24 hours. [Product Name] Natural Diamond Eternity Ring [Size] Size 12 [Metal] pt900 [Gemstone] Natural Diamond 0.5ct [Accessories] Appraisal certificate [Purchased from] Domestic jewelry shop [Condition] Used (Ultrasonic cleaning and cloth polishing done before listing) - If there is damage or loss after shipping, Mercari may provide compensation, so please comment before rating.