112 A Book of Precious Stones recognised precious stone was christened rhodo­lite. Although niineralogically different from almandite, and more like pyrope, rhodolite is known in the trade as " almandine," and, in the United States at least, is bought and sold under that title; the difference in composition and colour is too slight for merchant jewellers to recognise, and the name " rhodolite" is scarcely known to the trade or the general pub­lic. In fact, in the jewelry trade, any garnet with a tendency toward a violet colour is classed as an " almandine." Under the name " alman­dine," there has been an increased demand for this variety of garnet for medium-priced jew­elry for about five years previous to this writing. Scarcely second to almandite, is the dark blood-red pyrope, found in company with the diamond in South Africa, and, in the trade, called " Cape Ruby." This fine South African gem stone, companion of the diamond and na­tive to the world's greatest diamond fields, is a magnesium-aluminium garnet, containing manganese oxide and ferrous oxide; its specific gravity is 3.86, approximating that of the Bohe­mian pyrope, which it resembles in both chemical composition and colour, thus clearly classing it as pyrope, and not almandite, as was done for