You are looking at a Egyptian Turquoise cabochons. The total weight is with a thin layer of backing. The penny shown at 19mm for a size reference only. It was free form hand cut and has a good shine. The stone shown in the picture is the one that you will receive. Thanks for looking and take a look at my other items! I do combine shipping for no extra charge. I also ship any order or invoice over $100 for FREE in the USA. Be sure to add me to your favorites list!