I've had several questions on the sheet of mica I used to mount the Bird/Egg beeswax collage on....it's the dark brown irregular shaped piece behind the rectangle collage.
It is a sheet of "Grand Effects" mica from USArtQuest. It's about a 10" x 13" piece! They also offer smaller sheets and other mica products as well. Actually, USArtQuest is the largest supplier of art quality mica in the world!!
The Grand Effects is like the biggy mac size in mica world. It's actually the largest sheet of mica I have been able to find. Beautiful stuff. If you order, be sure to keep in mind that since it's a natural product no two packages are going to be the same...shape, size and coloration will vary from piece to piece.
If you've visited much or read my book you'll know how much I love mica. It's one of my favorite materials to work with. I even created a mica triptych in one section of my book using the large/Grand Effects sheets.
Simply marvelous stuff!!!