piatra  -  corner-stone

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piatra  -  rock

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piatra  -  stone

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piatra rotunda  -  boulder

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piatra de mormant  -  grave

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piatra de tocila  -  grindstone

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piatra pretioasa  -  jewel

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piatra kilometrica  -  landmark

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piatra de pavaj  -  metal

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piatra kilometrica  -  milestone

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piatra de hotar  -  milestone

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piatra de moara  -  millstone

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piatra ponce  -  pumice

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piatra de incercare  -  touchstone

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piatra pretioasa  -  stone

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piatra fasonata de colt  -  cornerstone

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piatra fundamentala  -  cornerstone

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piatra acra  -  alum

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