Bisbee Turquoise Mine located in Bisbee Arizona. Bisbee Mine has been closed for many years but they still do an annual turquoise tour. Bisbee is one of the best known turquoise mines in the world, in fact when talking about DEEP blues many just say Bisbee Blue and we know the color. This material comes in some of the best and brightest blues known to turquoise industry. Bisbee also comes in in Green and a baby blue with the Web taking the prize in the most expensive turquoise Arizona produces with top end Bisbee ranging upwards in the $200-$300 a carat range and even the lower end Baby Blues getting $4-$10 a carat 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 The photos in this listing are taken in natural sunlight, yes this is the worse conditions for photographing turquoise, we do this so when you get the stone you will be delighted how it looks in your hand. 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.