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Majorica pearl
Majorica is the brand name given to non organic man-made imitation pearls made in the island of Majorca, Spain. Produced by Majorica, S.A. (a Spanish company) on the Spanish island of Majorca in the Mediterranean since 1890, Majorica pearls have a closer resemblance to natural pearls, than many other types of imitation pearl (e.g. plastic beads).
==Production==
Majorica pearls are not formed in mollusks, but are man-made on solid glass balls coated with layers of pigmented and protective lacquers. They begin from high density dull glass with a specific weight, similar to that of real pearls. These nuclei are then dipped into a special pearly liquid, hemage, an adhesive paste made of oil and ground up fish scales or mother-of-pearl for their iridescence.
The coated nuclei are then dried and polished by hand to remove imperfections such as bumps and blemishes. This coating process is repeated (around 30 times) until a multitude of fine layers is formed over the nuclei, building up the density and color uniformity. To assure durability, the formed, blended multiple layers are subjected to various gases and solutions that make them impervious to discoloration, chipping and peeling.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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