Sodium Lauryl Sulfate (SLS) in Needle form is a popular, high-quality foaming surfactant. It’s a great basis for producing foamy cleansers of many types. Rug shampoos, light duty solutions, laundry detergent, and fine fabric wash are just a few of the common...
The Colour speckles is determined by the activity of mixing Sodium Sulphate & Sodium Chloride, Sodium Silicate & Colorant. The particles are homogeneous in appearance, size & colour and gain very strongly, so they will not get crushed into powder.
Dolomite is made of 60% calcium carbonate and 40% magnesium carbonate. However, it might also contain heavy metals, such as lead. People use dolomite as a source of calcium and magnesium, but there is no good scientific evidence to support this use.
Sodium silicates are colorless glassy or crystalline solids, or white powders. Except for the most silicon-rich ones, they are readily soluble in water, producing alkaline solutions. When dried up it still can be rehydrated back in water. Sodium silicates are stable... 
