Natural bluish green tourmaline ring. 1.48 carat weight, 8.5x6mm, unheated & untreated natural tourmaline. Most gemstones are heated/treated today & unheated/untreated ones are much rarer & more valuable. Oval solitaire sterling silver ring size 7. A beautiful dark teal color gemstone jewelry gift for her. Natural Bluish Green Tourmaline Ring 1.48 Carat Oval Solitaire Sterling Silver Size 7 Jewelry Gift