Hello Doug! We have tan and gray polymeric sand in stock. Black sand is special order. Colin saw our black lava not sand. We do have white sand in bulk as well as mason sand which is gray.
I was there picking up aggregate and think I saw black sand in bulk. You should call and ask. Outside of the box stores, that sort of material typically comes in bulk and you would need a truck and/or trailer. If you have a truck, I'd check out Lang Stone or Semco Outdoor, their pricing tends to be better than Mr Mulch
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