Tavernier wrote about 1670: “It is possible that of those who have written before me concerning pearls, none have recorded that some years back a fishery was discovered in a certain part of the coasts of Japan, and I have seen some of the pearls which the Dutch brought from thence. They were of very beautiful water, and some of them of large size, but all baroques. The Japanese do not esteem pearls. If they cared about them it is possible that by their means some banks might be discovered where finer ones would be obtained.”[[176]]
In 1727, Kaempfer wrote that pearls, called by the Japanese kainotamma or shell jewels, were found in oysters and other mollusks almost everywhere about Saikokf. Every person was at liberty to fish for them. Formerly the natives had little or no value for them, till they learned of their estimation by the Chinese, who were ready to pay good prices for them, their women being very proud of wearing necklaces and other ornaments of pearls. “The largest and finest pearls are found in the small sort of oysters, called akoja, which is not unlike the Persian pearl-oyster. These are found only in the seas about Satzuma and in the Gulf of Omura (Kiusiu). Some of the pearls weigh from four to five candareens[[177]] and these are sold for a hundred kobans each.[[178]] The inhabitants of the Loochoo Islands buy most of those about Satzuma, since they trade to that province. Those found on the Gulf of Omura are sold chiefly to the Chinese and Tunquinese, and it is computed that they buy for about 3000 taels[[179]] a year. This great profit occasioned the strict orders, which were made not long ago by the princes both of Satzuma and Omura, that for the future there should be no more of these oysters sold in the market with other oysters, as had been done formerly.”[[180]]
Kaempfer also noted that the Japanese obtained pearls from the yellow snail shell and from the taira gai (Placuna) in the Gulf of Arima, and especially from the awabi or abalone (Haliotis). This mollusk was much sought after for food, being taken in large quantities by the fishermen’s wives, “they being the best divers of the country.”[[181]]
Of the several species of pearl-oysters which occur in the coastal waters of Japan, the only one of importance at present is the Margaritifera martensi. While this occurs in very many localities, it is most numerous among the southern islands, where some fine pearls have been secured. The fishery for this species was quite extensive thirty or forty years ago, and the reefs were largely depleted. For nearly a score of years it has been used in growing culture pearls, an account of which is given on pages 292, 293.
A few pearls are obtained from several other bivalve mollusks in Japan. Among the collections of the present writers are pearls from Margaritifera martensi, collected at Bay Agu; from M. panasisæ, about the Liu-kiu Islands; from Pecten yezocusis, in Sokhaido; from Mytilus crasitesta, in the Inland Sea, and from North Japan, and from a species of Dipsas found in Lake Biwa.
While the pearl fisheries of Japan are not of great importance in any single locality, the distribution of the reefs is so extensive that the aggregate yield is considerable.
The awabi or ear-shell (Haliotis gigantea), found on the coast of Japan, Korea, etc., yields many pearly forms. This species is much smaller than the California abalones. It has a fairly smooth, nacreous surface, but its value is depreciated by the great size of the marginal perforations, which render useless for commercial purposes all of the shell external to the line of perforations. While its opalescent tints make it desirable for manufacturing into certain styles of buttons and buckles, its principal use is for inlaying work or marquetry, for which it is especially adapted, owing to its fineness of texture and beauty of coloring even when reduced to thin sheets.
FISHING FOR THE AWABI (ABALONE) SHELLS AT WADA-NO-HARA, JAPAN
Probably the most interesting of the abalone fisheries is that on the shores of Quelpaerd Island, about sixty miles south of the Korean coast, which is prosecuted largely by the women. Dressed only in a scanty garment, these women swim out to the fishing grounds, distant several hundred yards in some cases, carrying with them a stout knife and a small sack suspended from a gourd. On reaching the reefs, they dive to the bottom—sometimes to a depth of six or eight fathoms—and by means of the knife, remove the abalones from the bottom and place them in the sack. They may remain out an hour, diving repeatedly until the sack is filled, when they swim back to the shore. Pearls are found only rarely; in one lot of one hundred shells, only five were found bearing pearls; two with three pearls each, two with two pearls each, and one with a single pearl. The flesh of this mollusk after it has been cleaned and dried, is quite popular as an article of diet. Although white when fresh, the color changes to a dark red. The pieces of dried flesh, in the form of flat reddish disks four or five inches in diameter, are fastened on slender sticks—about ten to each stick—and displayed in the grocery shops in Seul and other cities.