Our sleeping beauty turquoise ring is made in sterling silver with a 7x5mm genuine turquoise gemstone from the Sleeping Beauty Mine in Arizona. Stones have a robin's egg blue color in an oval cabochon cut. The size 7 ring band has an antiqued silver southwest look with a solid closed sterling silver back. Perfect for a December birthstone gift. About Sleeping Beauty Turquoise: The name sleeping beauty came from the mountain where the turquoise was mined. The mountain resembles a sleeping woman laying on her back with her arms crossed. The stones color is a robin's egg blue with little to no matrix or veining. These stones were discovered by accident while miners were pulling copper and gold from the mine. The Sleeping Beauty Mine stopped producing turquoise in 2012. Since the closure of the mine, the value of this gemstone continues to rise as supplies become harder to find. Often you will hear sleeping beauty turquoise being called a true gem of the Southwest. Turquoise gemstones go through a process of stabilization to harden the gemstone and stabilize the color to prevent fading over time. Materials: Sleeping beauty turquoise gemstone 7x5mm oval cabochon cut 925 sterling silver ring setting If you have any questions just click "message seller" on our homepage. Thank you for visiting our jewelry shop, Linda and Joe .