Where was quartz first found?
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A 60kg mass is kept on 2 sq m wooden board. Calculate the pressure experienced by wooden board.
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Bob Kammerling Rose quartz beads dating back to 7000 BC have been found in the area once known as Mesopotamia (today's Iraq). Rose quartz jewelry was known to be crafted by the Assyrians around 800-600 BC. The Assyrians, along with the Romans, might have been the first to use this stone.
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