Sand is used for many purposes, from sandboxes to cement mixers. Not all sand is the same. You need to buy the right kind for the job, just like flour or sugar.
A very fine product that packs well and doesn’t shift like sand. An essential base for flagstone or almost any project that will have heavy material sitting on it.
Pulverized stone used in the construction of walkways or other stable surfaces. The dust is mixed with soil and compacted or used with gravel to fill spaces between irregular stones. Stone dust is a by-product of stone crushing operations.