Had a tiger eye change to red in a shank repair, luckily the customer liked it better and did not want it replaced even though I had one and offered to do it for free. Who'd a thunk that?
I believe I have read that the red and blue versions of tiger eye
and pietersite are heated (either by man or mother nature) to get
those colors from what starts out the usual yellow. So I suppose it’s
to be expected.
Tiger eye is cheap enough-- when I get a chance, I think I’ll heat
some and see what happens.
Noel