You are looking at 2 Natural White Buffalo Turquoise matching set cabochons. This rare material comes from Nevada, USA. The total weight is with a thin layer of backing. The sizes are shown next to the penny at 19mm for reference. They are all natural and have a good shine. The stones shown in the pictures are the ones 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!