The faceted stone is about 26x19mm natural smoke quartz. It is a great chocolate diamond color but without the flaws! The cut is almost like a Portuguese cut. A beautiful stone. Size 6. This is ready to wrap, pack and mail! :) I am pretty sure you will not see anyone else with one even nearly like it. It is marked and signed. I can probably resize this up to a 7 without damage. All metal is .925 sterling silver from reclaimed/recycled sources. It is eco friendly and guilt free. The stones we use Studio Cards, Smoky Quartz Ring, Coupon Box, Chocolate Diamonds, November Birthstone, Quartz Ring, One Ring, Recycled Sterling Silver, Smoky Quartz