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World Sands Collection
Koshimizu Beach, Koshimizu, Shari-gun, Hokkaido, Japan
This sand is moderately sorted and coarse/very coarse sand (0.4-2.0mm in diameter).  It consists of quartz and smaller amount of chert, shale, sandstone and so on.  The grains are rounded.  The transparent grains of quartz are beautiful.
one scale for 1mm
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