Sterling Silver Gray Shell and Quartz Doublet Ring. Checkerboard faceted Quartz on top of Brown Shell. (Size 10) (handmade in India) If you need a different size than what is listed, please enter your ring size in the space provided below. this ring can only be sized from a size 8 to a size 12. (For example, you can order a size 8, 9, 10, 11, 12.) A $5.00 sizing charge will be added to your order. Please note that due to the way our checkout is set up, the sizing charge will not show up during the checkout process; however, it will be added to your invoice before we charge your credit card.