I know this has got to be old tech but wow did it blow me away on how fucking cool it looks.
For the nerd who want to replicate this here’s a small write up on my methods.
(With simax) So blow a bubble out that’s sorta thick not thin. Then drop a bead of silver metal in the tube. Heat the bubble and while turning slowly in the flame start smacking the tube quickly with a wooden bat to knock the molten silver around the inner wall of the hot bubble. Takes 30-60 seconds to disperse the silver all over the wall of the bubble. Make sure there are no particles of silver significantly larger than the rest.
Then blow the bubble out thinner. Then heat and collapse it down solid like any other hollow implosion. Try to heat and collapse it down in 1 heat and try to keep it as hot as possible so the inside never drops in temperature. It should be soupy on the edge of control the entire time. Once it’s condensed down solid give it a quick shape then let it air cool until you can put it in your oven. Let it sit there for 5-10 minutes and soak(important for good purple color).
Take it back out and punty up to the face of it and tear it off your blow tube. Add a backing if you want. And then round out and maybe punty again if needed.
The key to purple is Once you’ve taken it out of the oven after that 10 minute soak the less you have heat it the better your color will be. If you heat it to many times the fume will go past purple and into other more common colors like orange/milky yellow. I found once a blue aura starts forming around the main fume cluster you have to stop or the purple will start to shift. Think of the blue aura as a warning sign.