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Clam Chowder Stone Slabs from Mexico
Clam Chowder Stone is a hard, dense limestone loaded with clam shells. It works easily and takes a fine polish with tin oxide or diamond. The base is yellowish color when natural, but when heated, it turns into a reddish color.
Ruler is in Inches.
Example of a Heat Treated Red Clam Chowder Stone Cabochon