
I know Ian MacDonald's work - even without clicking to enlarge your pics or see the signature. I have a few of these, which I bought from Ian directly at fairs. They're all completely unique - he uses centrifugal forces - spinning the hot molten glass on the end of the rod, to create the shapes of these and to expand the colours into the final shape.
Exactly what Michael Harris did to create crizzle stones.
Both very brave men to try doing something like this.
He won a Red Cone on a scholarship for a year ages ago, and I think he might even be working back there just now.
There's a thread where I've posted images of Ian's work recently.
ETA. Link to the thread I started and to say that I have enlarged the pics now, just to check absolutely that I'm right. I am.
https://www.glassmessages.com/index.php/topic,66198.msg370213.html#msg370213