This is a magnificent sterling ring. The stone is gorgeous. I thought it was green turquoise but I was mistaken. I am not a gemologist. However, a kind woman informed me that it is ruby in zoisite. The ruby is self explanatory but the stone is classified as zoisite because of the black striations. If you are looking for something different then this just might be for you. Ring is size 9 1/4. The center measures 7/8" x just under 3/4" wide. The band is marked 925 and ring is in excellent condition.