VINTAGE STERLING NATIVE AMERICAN RING SIGNED E ETSITTY SPLIT SHANK BEZEL SET NAVAJO DESIGN Boulder Ribbon Turquoise. Boulder or Ribbon Turquoise: Boulder Turquoise is when turquoise is cut to include the host rock or vein rock within which it occurs naturally. The trick to this presentation is to cut in such a manner as to include just the right amount of turquoise along with the host rock. Much of Boulder turquoise comes from the Royston and Pilot Mountain mines in Northern Nevada but it can actually be found at most turquoise mines where the turquoise occurs in veins. Nevada has been an important source of turquoise since prehistoric times. The majority of known deposits lay in a belt that trends north-northeasterly. Across the central part of Nevada from Mineral and Esmeralda Counties on the south to Elko County on the north. This belt coincides with a zone of strong tectonic activity that occurred in late Debonian and Mississippian times. Host rocks for the deposits are limestone, shale, chert, intrusive bodies or. Metamorphosed volcanic and sedimentary rocks. Narrow veins or small nodules along altered zones in host rock, but on rare. Occasions large slabs and nodules have been recovered. You can easily identify these narrow veinlets in the Boulder Turquoise surrounded by the host rock. Also known as Royston Ribbon, the Boulder turquoise mine is located in northeast Nevada. It was originally discovered in the 1970s by a Shoshone sheep herder who stumbled upon a vein of turquoise on the hillside while tending sheep. The mine has been developed as an open cut and constitutes the mines workings. The mine is marked by extensive bulldozer cuts on the east side of a small rounded hill. Production from the property has been small due to the limited amount of time allowed to mine due to the remote location and winter weather conditions combine to make Boulder Turquoise valued for both its beauty and rarity. The item “VINTAGE STERLING NATIVE AMERICAN RING SIGNED E ETSITTY Boulder Ribbon Turquoise” is in sale since Thursday, August 29, 2019. This item is in the category “Jewelry & Watches\Ethnic, Regional & Tribal\Native American\Rings”. The seller is “4744366” and is located in Andover, Massachusetts. This item can be shipped to United States.
- Country of Origin: United States
- Country/Region of Manufacture: United States
- Material: Stone
- Metal Purity: 925
- Artisan: E ETSITTY
- Main Stone: Turquoise
- Metal: Sterling Silver
- Jewelry Type: Rings
- Tribal Affiliation: Navajo
- Ring Size: 8
- Ethnic Origin: Native American
- Featured Refinements: Vintage Turquoise Ring
- Lot: No