Dyed Beads and Pearls

Does anyone on this list know what kind of dye is used to dye
gemstones like howlite? I’m also interested in knowing the kind of
dye used for freshwater pearls. (Didn’t somebody on this list say it
was leather dye? I don’t recall.)

I’m thinking it would be kind of fun to try my hand at getting some
custom colors going for my bead business.

Sun Country Gems