Brand New Hand Strung Navajo Old Pawn Double Strand Turquoise Heishi Shell Necklace. Geniune turquoise (turquoise has been treated). Treated Turquoise is frequently used in modern jewelry.It has been altered from its original state by a process intended to improve the color & durability of the natural stone. There are a number of ways that turquoise may be treated. Largest stone 14/16 in length. Heishi shell 1/16 in thickness. This item is in the category "Jewelry & Watches\Ethnic, Regional & Tribal\Necklaces & Pendants". The seller is "navajonickel" and is located in this country: US. This item can be shipped to United States.