This gorgeous white pinfire opal sits in a sterling silver crown bezel ring base. These beautiful sparkling opals are "lab-created", not an imitation stone. Lab-created opals contain 70-90% silica (from which natural opals are formed) and 10-30% resin. The resin makes the opal harder and stronger, unlike natural opals, which are known to be soft and fragile. Opals are the birthstone of October and are also known as the gem of choice by most and loved by many. Choose the stone size that best fits your style and preference at checkout. If you have any questions, please do not hesitate to contact me. The picture above of the ring on a finger is a stone size of 14x10mm. Ring Specifications: * Made in the: United States * Purity: .925 * Band/shank width: 2.5mm * Ring size(s) (U.S.): 6, 7, 8, 9 * Mounting/bezel size(s) 12x10mm, 14x10mm, 16x12mm, 18x13m Thanks so much for visiting my shop! Kay :)