In the meantime, improvements in cutting and polishing had greatly increased the beauty and popularity of diamonds and other crystal gems, and this adversely affected the demand for pearls. Furthermore, cleverly fashioned imitations manufactured at a low cost also served to decrease the relative rank and fashion of the sea-born gems. In the eighteenth century, pearls were relatively scarce; the resources of the American seas were largely exhausted, likewise the Ceylon and Red Sea fisheries were not to be depended on, and practically the entire supply came from the Persian Gulf, with a few from European rivers and the waters of China. As a result, although they continued to be prized by connoisseurs, pearls were not so extensively sought after by the rank and file of jewel purchasers. It should be noted, however, that from the most ancient times, the princes of India and of Persia have had their pick and choice of the output from Ceylon and the Persian Gulf; and the largest single collections of the Western world have never equaled the possessions of some of those rulers. Some Indian princes have loaded themselves with thousands of pearls, and individual ornaments have been valued not only by oriental, but by European experts, at several millions of dollars. The great diamond resources of Brazil were discovered in 1727, and after a few years these came on the market at the rate of 140,000 carats annually. At that time ladies of rank did not esteem diamonds so highly as pearls. This distinction was accentuated by Lord Hervey in his account of the coronation, in 1727, of George II and his consort Caroline, who wore not only the great pearl necklace inherited from Queen Anne, but “had on her head and shoulders all the pearls she could borrow of the ladies of quality at one end of the town, and on her petticoat all the diamonds she could hire of the Jews and jewelers at the other; so that the appearance and the truth of her finery was a mixture of magnificence and meanness not unlike the _éclat_ of royalty in many other particulars, when it comes to be nicely considered and its source traced to what money hires or flattery lends.”[39] In a portrait of Charlotte (1744–1818), wife of George III, the pearls and diamonds appear equally popular. On the entry of the British into possession of Ceylon in 1796, the fisheries of that country were resumed with great success after thirty years of idleness, resulting in very large outputs for several seasons. But owing to exhaustion of the areas, they were soon reduced, and the yield became small and uncertain.