Is 0.000000009210 stones as heavy as a Grain of Sand?
It's about one-seventy-fifth as heavy as a Grain of Sand
The weight of a Grain of Sand is about 0.000000690 stones.
(medium grain)
With tremendous variety in the size of grain and the component material, grains of sand weigh an average of 0.000000690 stones. In 2007, a team of seven in Myrtle Beach created the world's tallest sandcastle, which measured 15.10 m (49.55 ft) in height.
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