According to Garcias ab Orta (1563), the diamond was not used for medicinal purposes in the India of his time, except when injected into the bladder to break up vesical calculi. He notes, however, the prevalent belief that diamonds, or diamond dust, when taken internally, worked as a poison. As a proof of the falsity of this belief, Garcias adduces the fact that the slaves who worked in the diamond mines often swallowed diamonds to conceal them, and never experienced any ill effects, the stones being recovered in a natural way. The same author notes the case of a man who suffered from chronic dysentery and whose wife had for a long time administered to him doses of diamond dust. If this did not help him, neither did it injure him; finally, by the advice of the doctors, this strange treatment was abandoned. The man eventually died of his disease, but many days after the doses of diamond dust had been discontinued.[221] The Hindus believed that a flawed diamond, or one containing specks or spots, was so unlucky that it could even deprive Indra of his highest heaven. The original shape of the stone was also considered of great importance, more especially in early times, when but few, if any, diamonds, were cut. A triangular stone was said to cause quarrels, a square diamond inspired the wearer with vague terrors; a five-cornered stone had the worst effect of all, for it brought death; only the six-cornered diamond was productive of good.[222] The Turkish sultan Bejazet II (1447-1512) is said to have been done to death by a dose of pulverized diamond administered to him by his son Selim, who mixed the diamond dust with the sultan’s food.[223] It is also related that the disciples of Paracelsus (1493-1541) spread the report that he died from the effects of a dose of diamond dust. Ambrosius[224] conjectures that this was only an excuse to explain the demise of the master in the prime of life—he was but forty-eight years old at the time of his death—although he had promised long life to all who made use of his medicaments.