Material: 925 Silver (Can be changed to 10K-18K Gold/White Gold) Gemstone: Natural 5*7mm Emerald (Can be changed to other gemstones) Color: Gold / Silver (Choose your preferred color) This is a high-quality ring, carefully handcrafted by skilled artisans. As it is made-to-order, production will begin after your order is placed. Customization If you would like a specific ring size, please let us know in the comments. Also, feel free to consult with us if you wish to change the gemstone or material. About Certificate of Authenticity For those who wish, we can provide a certificate of authenticity for an additional 3000 yen. (Issuance takes 1-2 weeks) Thank you for viewing! Please feel free to comment if you have any questions. Color: Green Material: Silver Ring Size: FREE Included Items: Box, Appraisal Certificate Scratches/Discoloration: None