Whilst sapphire is hottest, and most worthy, in its deep blue variety, the precious stone occurs in all colors except crimson, with which the gemstone can be identified as ruby. Corundum that is even a shade much less red than ruby is immediately referred to as sapphire — pink sapphire. https://israeliypet.affiliatblogger.com/78908749/not-known-factual-statements-about-medical-and-health