New Synthetic Rubies Made by Professor P. O. Knischka

• 1 October 1982
• journal article
• Published by Gemological Institute of America in Gems & Gemology
• Vol. 18  (3) , 165-168
• https://doi.org/10.5741/gems.18.3.165

Abstract

Keywords

• PROFESSOR
• NEW SYNTHETIC RUBIES
• SYNTHETIC RUBIES MADE
• KNISCHKA A NEW