I meant to mention, at Tucson and many bead shows nowadays, you can buy what is being represented as "white turquoise"—that is merely magnesite that has the matrix effect added, but has not been colored. It is a bizarre twist in misrepresentation to call this stuff "turquoise." If it's been dyed blue, it's fake turquoise..., but to called the undyed material "white turquoise" is quite a stretch.

Last year, I was talking to a bead seller who maintained that ALL the magnesite beads were actually made from reconstructed magnesite. (Basically, presumably, magnesite powder that has been glued together—as with epoxy—to make reconstructed blocks.) I have not determined to what degree this may be true—but it's an interesting observation and admonition that should be considered.

JDA.