I have cut a10x12 gem quality austrailian opal with beautiful color and a high hand polish. The opal was set in a sterling silver leaf and added a nice size chain bail so you can wear different size chains of your choice. The pendant is appr:1 1/2in tall by appr:1/2in wide and weights 9.2 grams and comes with a nice 18in sterling silver chain. And this was made locally in the u.s.a. by M.c.m. and a one of a kind.