Sapphire, with its Mohs hardness of 9, second only to diamond, is one of the most valuable and wearable of all gemstones. Famed for its brilliance and rich blue color, sapphire actually occurs in a wide range of colors, including pink, yellow and green.The name corundum comes from the ancient Sanskrit "kuruvindam", while the name "Sapphire" comes from the Persian word "safir." Sapphires are seen as the guardians of love. When given as a gift it enhances love and tunes your psyches to one another. Also, it has been used to banish envy and jealousy as well as promote fidelity in marriage.