Our turquoise leverback earrings are handmade with natural sleeping beauty turquoise gemstones mined in Arizona. Stones are 10mm round puffed coin shaped with a robin's egg blue color to brighten up any outfit. Goes with any occasion dressed up or down. Made in 925 sterling silver, 14K gold or rose gold filled. 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 stones go through a process of stabilization to harden the gemstone and stabilize the color to prevent fading over time. Materials: Sleeping beauty turquoise gemstones 10mm round puffed coin shape All metal components are 925 sterling silver, 14K gold filled, or 14K rose gold filled If you have any questions just click "message seller" on our homepage. Thank you for visiting our jewelry shop, Linda and Joe .