Replacment parts for gem-tech unit

I recently purchased a used Gem-Tech unit called “the opal machine”.
I am looking for a source for replacement parts for this machine. I
found an address and phone number for the manufacturer, however when
I call no one answers the phone. Ive been told this unit is about 30
years old and possibly a prototype of the pixie unit diamond pacific
sells. Does anyone know where I can find replacement parts or any
info on gem-tech?