Material: 925 Silver (Can be changed to 10K-18K Gold/White Gold) Gemstone: Natural 4*6mm Spinel (Can be changed to other gemstones) Color: Gold / Silver (Choose your preferred color) This is a high-quality ring, carefully handcrafted by 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 would like to change the gemstone or material. *Because we use large natural stones, the amount of metal needed for the base will also increase. Therefore, please note that the price will generally be 50,000 yen or more if you change to 10K or 18k gold. About Certificate of Authenticity For those who wish, we can provide a certificate of authenticity for an additional 3,000 yen. (Issuance takes 1-2 weeks) Thank you for viewing! Please feel free to comment if you have any questions. Color: Red系 (Red-based) Material: Silver Size: FREE Accessories: Box, Certificate of Authenticity Scratches/Discoloration: None