Thread: Copper ruby
View Single Post
  #1  
Old 12-12-2017, 02:34 PM
Steven O'Day Steven O'Day is offline
Registered User
  
Join Date: Jun 2002
Location: portland oregon
Posts: 301
Steven O'Day is on a distinguished road
Copper ruby
Ran across this patent, they add a small amount of bismuth oxide to the formula. Anyone try this?

Manufacture of ruby glass
Reply With Quote