pink Sapphire is every other form of corundum, like Blue Sapphire, however it owes its pink coloration to hint quantities of chromium. purple Sapphires variety from soft, pale pinks to vibrant, vibrant red colorations. they're frequently visible as a romantic gemstone and are sometimes used as alternatives to pink diamonds in engagement jewelry. purple Sapphires are prized for their splendor and sturdiness, scoring 9 on the Mohs scale of hardness.