Thanks, Rocky.
I was considering posting this in the "ordering" thread, but I wasn't sure...
I found the blocks as well, and they seem pretty affordable to me. They resemble a handle material that Great Eastern Cutlery recently made called "Unicorn Ivory Acrylic", which was beautiful, but apparently had some serious problems with checking, cracking, warping and burning while in production that resulted in an abbreviated release.
Now, this was a tiny slipjoint with scales, not a larger fixed blade with a hidden tang, so even if this is the same material, its issues could be no problem. I'm planning on using this knife, though, so I was curious if anyone had any insight on this stuff.