A beautiful genuine Herkimer diamond crystal is set in a handmade 14/20 gold fill prong setting with a dainty but sturdy 1.1 mm band. - This ring is made to order to match the ring shown in the photo as closely as possible. However, every stone is different and will range in size and shape. - Stone sizes will typically be between 10-15 mm in length. - Herkimer diamonds are double-terminated quartz only found in the Herkimer region of New York.