Vista Grande Variscite, located in Nevada and and is just down the hill of from the Vista Grande. Today it is called the Vista Grande / Desert Bloom Variscite mine. Variscite is a close to turquoise is chemical make up just short the Copper needed to be Turquoise. This material has gained in value over the years it is actually rarer than turquoise. The Son and I do all the cutting work we never farm it out. We are Native American gem cutters, we are registered members of the federally recognized Native American tribe Wichita Indians out of Oklahoma. The photos in this listing are taken in natural sunlight. To be clear if it says Natural it is natural and backed with JB Weld, if it says 100% Natural it is all turquoise no backing was used. Size is Approximate give or take .5 mm Note: In the event of any typos in this listing, the item in the photos is the one or ones you will receive if you purchase this item. PLEASE NOTE: Some countries don't allow gemstones to be shipped to their citizens. Please check with Customs before making your purchases. If you live in one of the countries that don't allow gemstones to be imported and you buy from us, we will issue a refund and not ship the item. We offer a “NO HASSLE” seven-day refund with return shipping paid by the buyer. Our return policy starts when you receive the stone or it hits your PO Box, Buyer Pays return Shipping.