... 3.different size 4.natural or artificial colored sand suppliers1. color sand Raw materialMarble,Quartz,Basalt;GraniteSize range0-0. ... Aquarium,Fish tank,Hourglass) 3. Product Feature:1)The sand has wear-resisting, waterproof, anti-corrosion, non-toxic ... colour and luster is even.3)Natural colour sand production advanced spray coating, is non-toxic, ... quarry. 7)Top quality,low price. colored sand buyers