Navajo Sterling Silver highgrade kingman Turquoise Ring exquisite sterling silver ring featuring a highgrade kingman TURQUOISE The Kingman Turquoise Mine is one of the oldest and highest producing Turquoise Mines in America. It was originally discovered by prehistoric Indians well over 1000 years ago. Kingman Turquoise is known for its beautiful sky blue color and produces many variations of blue Turquoise Today, as in the old times, blue Turquoise from Kingman, Arizona is king, even though the mine produces all colors of Turquoise and green Turquoise is almost becoming blue Turquoise’s equal in popularity these days. Ring size 7 face of the ring measures 1inchx20mm 4mmband Ring weight 9.7grams no marks but tested as sterling silver great addition to your collection??