Re: Mixing oil paint with Dust Crushed Glass ?
don't know precisely what he used but there are all sorts of things you can add to paints for effect
i used to use something called " metalflake " for custom car painting
when added to clear or slightly colour tinted semmi transparent finnishes
it refracts sunlight in multi colours ( simmilar to a C.D. disk )
it is very expensive though
so i get the feeling it could have been something else ( i'll look for a link !! )
if at first you don't succede !!!!
give skydiving a miss !!