This is a very large synthetic emerald ring. I bought it because I wanted a large emerald, but I haven't had many opportunities to wear it, so I'm selling it while it's still in good condition. Emerald size: 9.7 x 7.8 mm Ring size: 10.2-10.5 The emerald is a more deeply colored blue-green than in the images. It seems to appear a bit lighter in photos taken with an iPhone (><)