The desire for the gem in Europe at this time was so great that Tavernier purchased over half a million dollars' worth from the Arabian Sea. Probably the immense quantities of pearls sent to Spain from the Indies by her rovers in the early part of the sixteenth century, caused the vogue of that gem during the three centuries following, for not much mention is made of them in western Europe prior to that time. Nevertheless pearls were esteemed in the British Isles as early as the eleventh century, for it is recorded that Gilbert, Bishop of Limerick, sent a present of Irish pearls from the fishery at Omagh, to Anselm, Archbishop of Canterbury, about 1094, and Scotch pearls were not only in demand in Britain but on the continent also as early as the twelfth century. In 1355, the Parisian goldsmiths forbade by statute, workers in gold and silver to set Scotch pearls with the Oriental. The Oriental pearl probably came into Europe first from Egypt through the incursions of the Macedonians into that country. Later, when Alexander overran Persia his followers doubtless became yet more familiar with the gem, for they spread through Arabia and the Persian Gulf where ancient fisheries also existed. Pearls were not well known west and north of Asia and Africa at this time, for a writer of Mytilene in the island of Lesbos, about 350 B.C., which was but a few years before Alexander's conquest of Persia, says: "In the Indian Sea, off the coasts of Armenia, Persia, Susiana and Babylonia, a fish like an oyster is caught, from the flesh of which men pick out white bones called by them 'pearls'." This would indicate that knowledge of them was being carried at that time by returning soldiers, camp-followers and travellers, and these men probably brought home also many of the "white bones" obtained by trade or looting. Whatever the method by which they were introduced, pearls came into favor, and the favor increased as they were brought with other jewels from the looted treasuries of eastern potentates. The Macedonians established fisheries in the Red Sea, where the Egyptians obtained their chief supply, and the Romans later brought them also from the Arabian Sea. Three centuries B.C., the power of the Macedonians commenced to wane; Rome began to rise and overrun the countries which had been subject to the Macedonians; and pearls were thereby carried further west. The Romans adopted the pearl as a jewel of the first importance if not the chief of all, probably because they had found them so regarded by the older royalties they plundered. As the riches of surrounding and far-off countries which she raided, poured into the coffers of Rome, and the city grew to be the centre of power and wealth, the excesses of the rich became ludicrous to the verge of insanity. In their wild extravagances the pearl was prominent.