Pigment Size: Beaver Dust mica pigments are 10-60 microns in size which is perfect for working with resins, lacquer, epoxy, cosmetics, automotive paint, nail polish, latex and many other applications.
For opaque (not transparent): start with 1/2 tsp to 3/4 tsp with most colors and work up
For transparent: start with 1/4 tsp and slowly add more to achieve desired result
It should be noted that all the mica powder colors react differently (in concentration of colour) and it is best to start with lower volumes of pigment and keep adding to desired intensity of color. You can always add more!