This item was refurbished about 15 years ago. There are no certificates of authenticity. It has been cleaned and polished with a special cleaning solution, but there are some minor scratches due to use, so please check the photos. [Details] ・Stone Type: Opal, Diamond ・Carat (Weight): Opal (0.56), Diamond (0.08) ・Weight: Approximately 4g (slight variations may occur) ・Metal Type: Pt900 ・Size: Size 6 ・No certificate of authenticity ・No special case or outer box. ・Cleaned ◆Includes shipping ◆Please purchase after fully understanding the characteristics of used items. Please refrain from purchasing if you are sensitive to this. ◆To prevent switching, please refrain from canceling after purchase. ※If you have any concerns, please comment before purchasing.