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Camaya bolshaya jemchujina v mire porazit lyubogo yuvelira

Camaya bolshaya jemchujina v mire porazit lyubogo yuvelira




Jemchujini sostoyat iz togo je veschestva, chto i perlamutr, pokrivayuschii stvorki rakovini mollyuska. Ustritsa imeet ochen nejnoe telo, dlya zaschiti kotorogo i virabativaetsya zaschitnoe pokritie. Poetomu, kogda vnutr rakovini popadaet inorodnii predmet, k primeru, peschinka, mollyusk pokrivaet etot predmet sloyami perlamutra, i togda poyavlyaetsya jemchujina. Esli etot protsess proishodit v estestvennih usloviyah, jemchujina obichno imeet idealno krugluyu formu. Esli je pervichnoe inorodnoe telo «podsajivayut», jemchug poluchaetsya s iskrivleniyami poverhnosti. Takie jemchujini nazivayut iskusstvennimi. No v YAponii razrabotana tehnologiya viraschivaniya iskusstvennogo jemchuga, nichem ne ustupayuschego naturalnomu. Samaya bolshaya v mire jemchujina imela 5 santimetrov v dlinu i 10 santimetrov v diametre. Podobnie nahodki mojno nazvat poistine unikalnimi, ved dlya poyavleniya takoi bolshoi jemchujini nujni ne tolko udachnie prirodnie usloviya i opredelennii vid mollyuska, no i bolshoi promejutok vremeni dlya rosta jemchujini.
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Статья: Camaya bolshaya jemchujina v mire porazit lyubogo yuvelira    star3.5
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