Wouldn't try it. Pearls aren't that exspensive. Buy the bottle not by the ounce its cheaper. Later you can sell it to your friends. Shtick with the same medium, interbreeding creates things like a 5 legged frog or a 7 color/texture truck, its not pretty.
If you have an easy goin rep at your local paint store, you can proabably talk them into just giving you a little bit. NAPA let me borrow a couple bottles for a week when I was doing my phantom flames.