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Gramma wasn't kidding! Grampa really WAS a "diamond in the rough"!
ChadTower:
--- Quote from: Peale on April 13, 2005, 10:13:50 am ---If you flung a gem into the ocean it would degrade.
--- End quote ---
Friction?
SirPeale:
Combination of the salt acting on it, plus - yes - friction from the tides.