Colored silica The colored silica sand we produced is made from the selected refined silica mineral. With our advanced technology and strict modern procedure, the color of our silicon is of high stability and brightness, and can be modified by your requests. Through testing, it has no sign of fading in long-time boiling water, NaOH, HCL, etc. The sand is for various usage including craft gifts, waterproof material, finishing and construction material, epoxy colophony floor, and glass material and so on. Because of cost, the prices of our product are lower than most other competitors. We also produce the sand by clients designation such as the color, the size, packaging and so on .