Hello, This is a Tiffany Harmony ring, 0.2ct, size 7. I believe this is the average size for a woman's ring finger. I couldn't capture it in the photos, but the ring is engraved with "0.2ct" on the inside. I received this as a gift, but I'm not going to use it, so I'm selling it. I only received the ring box, not a certificate of authenticity, so I'm offering it at a low price. Thank you. Color: White系 (White-based) Size: 7, 2.5g Diamond Cut: Round cut Accessories: Box Scratches/Discoloration: None