Size is about =  30.3 x 19 x 7.8mm

You are looking at a Ribbon Boulder turquoise cabochon. The cab has a thin layer of backing.  The penny is shown at 19mm for reference.  It was freeform 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.  To combine it is best to make one payment for all items only when you are ready for me to ship.  I will update the invoice after any new purchases.      I also ship any order or invoice over $100 for FREE in the USA.  Be sure to add me to your favorites list!