The pearls are a type of ‘speleothem’ – mineral deposits that are formed in caves by moving water. Unlike more commonly known speleothems, such as stalactites and stalagmites, cave pearls ...
The pearls are a type of ‘speleothem’ – mineral deposits that are formed in caves by moving water. They’re often found in shallow pools of water, and a study recently published in Archaeometry ...
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