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Start Over Object class Stone tools Collection place Richmond, Contra Costa County, California Culture or time period Early/Middle Horizon: Patterson facies (ca. 500–200 BC)
Hearst Museum object titled Blade, accession number 1-137853, described as Bi-pointed blade, obsidian.
Hearst Museum object titled Charmstone, accession number 1-10653, described as Charmstone, very small dark colored, with large perforation.

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