Sterling silver king an turquoise ring size 6.5. Turquoise is one of the official birthstones for the month of December, and is heralded as the stone of communication. It encourages enthusiasm, thus inspiring new projects and bringing to light undiscovered artistic abilities. Turquoise also provides understanding and encourages attention to detail while attracting prosperity and success. This ring is made of sterling silver with Kingman turquoise specifically. 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.