You are looking at 1 pound of unfinished turquoise, ready for cabbing or other projects. Some of them may have flaws. This is just a mixed variety of turquoise from different origins. Most of them do have backing on the back. The sizes all vary with the penny shown at 19mm. The pictures are taken with the stones wet to show the color. The ones shown in the pictures are the ones that you will recieve. This lot will be sold AS IS. Thanks for looking and check out 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.