Home growing crystal

I've got this "Grow a Crystal" box about a week ago.Done everithing up to instructions.I put it in the book woredrode and . . . forgot about it.
Today I've found that it's working(see the clear rock in between the quartzite rocks?that's the one!)
It's actualy attacht to one of the rocks and I'm afraid that it won't be clear at the end.But let's hope for the best!