This is the result of serendipity when I decided to experiment with firing some powders I found left over from a previous sculpture course!
This is a time consuming one which involves 4 separate times in the Kiln. The first stage uses the powders on white capped by clear at various levels of thickness and firing it on extra hot. Then smashing it up into bits and firing the shards on hot again. Then arranging the rounded shards on the glass and firing again. Then slumping in a bowl and firing again!
I actually love it though and haven't seen anything like it anywhere. So will keep my secret forumula powder, errr, secret!