Pearl

Pearl

Pearl(Grommet じ ゅ) with,PearlWith you call, jewel. As for pearlShellfishIt is the organism mineral which is formed with internal. The foreign material which enters into internal of the shellfish as a nucleus calciumProteinSo it is connected and to many layer mother of pearl layer is formed by the fact that it converts. It has various colors light of type and content and mother of pearl layer of pigment which is included in that, protein due to the structure which interferes. There is various pearls depending upon the type of shellfish,アコヤガイ pearl(The Ako house shellfish pearl) and the like is famous.

Being natural, it produced rarely, processing was easy and in order to be rich in beautiful gloss, it was prized at the many places of the world for a long time as the jewel. Japan, Japanese book period and old thing description、Collection of Myriad Leaves (Man'youshuu)You can see the description already.

In wooden letter of Nara era "Shima national English apprehension Gun name gimlet home village" (Mie prefectureShima cityThere is the record which the Daio Cho wave ardently) the "Shima national English apprehension Gun name gimlet home village boat surpassing village" (Cho Funakoshi city Daio Mie prefectural Shima) from the "abalone ball" (the abalone pearl), the "white ball" (the Ako house shellfish pearl) you supply.

This pearlWith originally, it points to the thing of the abalone ball, but presently it points to the アコヤガイ pearl in addition to the abalone ball.

For a long time, the pearl was used in decoration, but as a medicine it was used. Cleopatra melting, it is famous to drink, but as the antifebrile, it is used even in Japan it is sold presently as the cold medicine.

As for cultivation pearl,1893How Mie prefectural Shima city Ago Cho to reside at the English apprehension bay of Mie prefecture succeeding in the cultivation of the complete round pearl of the Ako house shellfish since, Mie prefectureThe English apprehension bay・ Ehime prefectureUwa sea・ Nagasaki prefectureTsushimaAnd so on with it is done. It has pearl king and aliasYukiyosi MikimotoIt is tend to be thought as the inventor, but according to Yukiyosi's autobiography it is not the inventor, it is cultivation business and the person who succeeds with circulation.

In the unit of measure of weight of the pearl, from the fact that those where it succeeds in the industrialization of the cultivation pearl are Japan, Japan shaku 貫 method momme (3.75 gram) And 貫 (3.75 kilogram) Is used, but carat (200Milligram) AndGrain50 milligrams) it is used (usually they are approximately 48 milligrams, but, concerning weighing the pearl.

6 month birth stone.

Table of contents

Southwest Pacific pearl

The margin butterfly guy (the white butterfly shellfish) the pearl which from scientific name Pinctada maxima is produced, mainly, it is cultivated in Australia, Indonesia and the Philippines.

Black pearl

The clo butterfly guy (the black butterfly shellfish) the pearl which from scientific name Pinctada margaritifera is produced. Tahiti (the French territory Polynesia), it is cultivated mainly with Okinawa. As for those which are produced in TahitiSouthwest Pacific pearlAmount there are also times when it is similar.

Fresh water pearl

The pearl which you called the イケチョウ shellfish and the crow shellfish, can make in the fresh water raw shellfish is called the fresh water pearl (the fresh water pearl) with. The majority of the fresh water pearls which presently have circulated is produced by cultivation. The case of cultivation, only the overcoat membrane piece is inserted into the mother shellfish, from the fact that the nucleus is not inserted the pearl is not brought up in complete round, the pearl and others of the various forms such as rice type and drop type is obtained. It diverges also the color, such as orange and purple. Among the fresh water pearls, the grain is small as for cheap onesBeadsIt is used as.

Conk pearl

The Caribbean seaThe pearl which is produced from the conk shellfish which inhabits.CoralDoing pink color the way is a special feature. The conk shellfish is the snail and because it is impossible, artificially to insert the nucleus, the conk pearl is made rare with 100% natural pearl.

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  > Japanese to English > ja.wikipedia.org (Machine translated into English)