I am selling this item because I no longer use it. JP 15.5 (Japanese size) - Size 15 to 16 Inner diameter: 1.8 cm Original receipt included (personal information redacted) There are minor scratches if you look closely, but overall it's in good condition. Size: 16 Material: Silver 925 Model name: Dagger Ring Included items: Warranty, Certificate of Authenticity, Leather pouch