A transparent rich blue form of corundum named in the 13th century, the blue colour caused by the presence of titanium. The deposits of sapphire in Sri Lanka have a history of several thousand years. In antiquity, the robes of important Indian priests were adorned with sapphires. It is also said to have been the “Stone of Kings”, worn to protect them against harm and to have been one of the stones used in the breastplate of the ancient high priest. Sapphire is said to be helpful in freeing one of the unpleasant or unwanted thoughts and in bringing joy and peace of mind by making one more receptive to beauty and intuition. It has been used in the treatment of disorders of the blood, combating excessive bleeding and strengthening the walls of veins, has relieved insomnia and nervousness and has also been helpful in treating boils. Sapphire is the birthstone for September, symbolizing clear thinking, and the zodiac gem for Taurus (20 April to 20 May), as well as Tuesday’s gemstone (star sapphire).