This outstanding men's statement ring is designed and handcrafted by Navajo silversmith Michael Calladitto. Each ring has an "M&R Calladitto Navajo" stamp to show its authenticity. Rectangle stabilized Kingman turquoise measures 14.5mm x 20.5mm. Michael hand selects each stone for every ring he crafts, stones colors and matrix will widely range, please allow for variances. Available in whole sizes 9-13.