Gemmological investigation of a synthetic spinel crystal from the Soviet Union

1991 ◽  
Vol 22 (5) ◽  
pp. 300-304 ◽  
Author(s):  
John I. Koivula ◽  
Robert C. Kammerling ◽  
Emmanuel Fritsch
1969 ◽  
Vol 14 (9) ◽  
pp. 516-516
Author(s):  
Morton Deutsch

Sign in / Sign up

Export Citation Format

Share Document