various color sand for art and decorative 1 finess:fine 2 colorizd 3 technic:natural or artifical 4 size(mesh):20-40 40-80 various color sand for art and decorative 1 feature:uniform partical size,acid-base resistance,heat-resistance,bright,nontoxic,enviremental,safe,do not have any danger chemicals.2 technic:natural or artifical3 color: the natural :black yellow red gray green and each color ...