a nice close-up of the crystals. they're kinda small but well seeded so at least i have some. this is the result of 4 hrs holding at 1050° c.
some more images from the test batch follow. the one on the left failed and looks nasty. the right picture is three different batches, one of which worked.
this one is the same glaze as (the working glaze) above but on a porcelain body. the transparency is kinda cool and really shows up the white surface of the clay. it ran like a bitch on this body however.