Ring weight- 5.065 Grams (25.325 ct Tw). Stone weight- 2.015 ct. Ring size- 6 1/2. All stones are 100% Natural Unbacked and Untreated ALWAYS. Lapidary And Silversmith Work Done by me, Jared, right here in the USA. 100% Natural Untreated Blue/green kingman High Grade Turquoise Handmade Designer Silver Jewelry Cabochon Artisan ring. This is the Real Deal, from the World Famous kingman Turquoise Mine. This Material is getting to be Impossible To find Natural and Untreated. This is a Rare Turquoise Collectors Dream Ring! Outstanding Rare Ring for your Fine Jewelry Collection, Statement Ring or a Conversation Piece for your Rare Turquoise Specimen Collection. The Mineral Park Mine, in the Cerbat Mountains 14 miles northwest of Kingman (now known as Kingman Turquoise Mine) was first mined by Native Americans well over 1000 years ago. It is one of the three sites of prehistoric mining localities in the state of Arizona. Mineral Park was the most extensively worked area by the Indians of the three. “Chuck” Colbaugh found a cache of stone hammers uncovered in ancient trenches and tunnels, when he had the turquoise mining concession in May of 1962. Ithaca Peak and Turquoise Mine (formally called Aztec Mountain or Aztec Peak) are the most famous of the peaks in the area containing turquoise. Brought into the area, Hohokam hammers, dating back to 600 a. And the Navajo hammers were used for mining, polishing and finishing the turquoise. Also, found were occurrences of charcoal and skin water containers suggesting that the rock was first heated with fire, then cooled suddenly with water. This would cause fracturing. Using the hammers and picks, the Indians would cut the turquoise from the rock. The hammers are on display at the Mohave Museum of History and Arts and the Arizona State Museum in Phoenix. In the late 1880’s to the early 1900’s, Mineral Park was mined by the Aztec Turquoise Co. The Los Angeles Gem Co. And Mineral Park Turquoise Co. The stones for Kingman jewelry were first mined by the Navajos dating back to 600 AD. On the Northwestern border of Arizona, the Kingman Turquoise Mine is an enormous open pit that has turned out a great quantity of the finest quality turquoise available. This mine, defined by its turquoise nuggets, displays the hue of an energized blue in contrast with its black matrix. While still an electric blue, the high-grade Kingman turquoise shows a gorgeous silver matrix instead of the average black. These stones are often set apart by their eye-catching color range from a dark sea blue to an electrifying white blue. These stones also possess natural cracks, displaying their true silver or black matrix mentioned above, making for beautiful Kingman jewelry. The Kingman Turquoise Mine in Arizona has produced the largest quantity of turquoise stones in recorded history. The sheer amount and quality of Kingman jewelry’s blue coloration have made its stones one of the most fashionable styles of jewelry worn in America. The mine was first discovered by James Haas in the late 1800s. However, the mine was relatively unheard of until Leonard W. Hardy launched a successful marketing campaign from 1950 to the 1970.