Gems, Проверка

27-August-2024 Tuesday
Is it true that a pearl appears due to a grain of sand trapped inside a shell?


Provereno.Media
 
Is it true that a pearl appears due to a grain of sand trapped inside a shell?
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Youtube Biology Video Gems Pearl Animals Research Clam The science Informative Проверка Scientists Facts

10-August-2014 Sunday
How to distinguish amber from a fake


NiviKing
 
How to distinguish amber from a fake
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Gems Deception Проверка Jewelry Amber
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