Though sapphire is most popular, and most precious, in its deep blue wide range, the precious stone occurs in all colors except purple, with which the gemstone might be termed ruby. Corundum that is even a shade much less purple than ruby is mechanically identified as sapphire — pink sapphire. https://cancer-trends46801.weblogco.com/26812810/how-cancer-risk-factors-can-save-you-time-stress-and-money