Material: Platinum 900 Decoration: 0.522 carat diamond Size: Size 9 (Japanese ring size) Stone: Diamond Purchased from: Art Jewelry Purchase price: Approximately 500,000 yen Purchase date: Approximately 30 years ago Accessories: Box (bag) included / Guarantee included Used only for a few hours on celebratory occasions. The condition is good as it was hardly worn. Accessories: Guarantee (certificate)