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Title: More like building sand
Review: It is not silica free despite coming up in Amazon's search results for "play sand silica free" (before I wrote this review).It is horrible sand; many of the particles of sand in here are like tiny flat slithers of quartz rather than roundish sand particles and there are bigger bits of black stones in it. I've not seen any like it in the natural world.I would call this building sand, the type that you would mix with cement, not the type you would give your child to play with. Nonetheless if you don't care about all that stuff, it clumps together relatively well (like building sand) so makes ok sand castles.
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