Stone Type _________________ Smoky Quartz Approximate Stone Size _______ 18x13mm Approximate Stone Weight _____ 15 cts Jewelry Metal _______________ Solid 10k Yellow Gold Approximate Metal Weight _____ 5.7 grams Ring Size __________________ Size selectable during checkout Our Warranty _______________ A full year on workmanship Our Guarantee _____________ Totally unconditional 30 day guarantee ______________________________________________________________________ When I first saw these Smoky Quartz, cut using the Quantum, or concave Cut -- I fell in love... This cut is so fluid, the sparkle so intense. I mean really, Smoky Quartz was always sort of a dull brown. NOT ANY MORE. These are really cool stones, with a life you've never seen before... The stone measures 18x13mm, and weighs in the neighborhood of a huge 15 carats. The mounting is a very pretty, heavy filigree. It's a good, solid mounting; 5.7 grams, and very sturdy. This ring just "feels" good, and look great! ________________________________________________________________________ BTW, Since we make this from scratch after you order it, we have a lot of flexibility. We can cast this in yellow, white or rose gold, and in any of 10k, 14k, or 18k. Obviously, some of these choices will affect the price, but email us and let us know what you're interested in, and we'll give you the best price we can live with. We enjoy a strong repeat business, and keep it by making good jewelry you'll want to wear at prices that we both can live with.