Cloud Mountain Turquoise, this material was mined in China, Hubei Provence. Cloud Mountain is one of the most popular Turquoise China has produced The deep blue web is the best these mines produce but it also produces greens and lite blues. Yungai, Yungaisi and Yungaishi are the three mines on the same Mountain that are considered Cloud Mountain turquoise. This is similar to the Royston claims where 15-20 mines all carry the same name and are mined in the same location/Mountain. On the description I put the actual mine the material was mined from such as (Yungaishi) or (Yungaisi) so as a buyer you know the exact hole it came from. My rough comes direct to me from China and a respected representative of the company that owns the Mining rights. 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. To be clear “100% NATURAL” it is all turquoise no backing was used If it just says “NATURAL” it is natural and backed with JB Weld. The photos in this listing are taken in natural sunlight. Size is Approximate give or take .5 mm PLEASE 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. 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.