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One of the most interesting facts about the origins of small rocks is the fact that they often contain ridges and grooves on their top surface. Even if the rock has been polished, these are likely natural occurrences. These ridges and grooves help explain how the stone came to be. Rocks that have these features are known as tentaculites. They are tiny needle-like fossil shells that form parallel displays on the bedrock.

Produktbeschreibung
One of the most interesting facts about the origins of small rocks is the fact that they often contain ridges and grooves on their top surface. Even if the rock has been polished, these are likely natural occurrences. These ridges and grooves help explain how the stone came to be. Rocks that have these features are known as tentaculites. They are tiny needle-like fossil shells that form parallel displays on the bedrock.