Whilst sapphire is hottest, and most worthy, in its deep blue variety, the precious stone occurs in all colors except red, with which the gemstone will be named ruby. Corundum that is definitely even a shade fewer pink than ruby is automatically known as sapphire — pink sapphire. Indeed, tourmaline, https://beaupgujy.azzablog.com/26892772/diabetes-treatments-no-further-a-mystery