This is in excellent condition, and measures 19, and is marked on the sterling clasp with sunrise hallmark as shown. The stones are graduated width with the center 3/8" wide and go smaller to the clasp 3/16". Please look closely at my photos for details. The item "VINTAGE GENUINE TURQUOISE HEISHI BEAD STERLING SILVER CLASP NECKLACE" is in sale since Sunday, October 4, 2020. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Vintage Ethnic/Regional/Tribal\Southwestern". The seller is "sandy810" and is located in Windham, Maine. This item can be shipped worldwide.