TY  - BOOK
AU  - Sinkankas,John
TI  - Gemstone & mineral data book: a compilation of data, recipes, formulas, and instructions for the mineralogist, gemologist, lapidary, jeweler, craftsman, and collector
SN  - 0020941005
AV  - TS752.5 .S56 1974
U1  - 736/.2/028 
PY  - 1974///, c1972]
CY  - New York
PB  - Collier Books
KW  - Gem cutting
KW  - Handbooks, manuals, etc
KW  - Mineralogy
N1  - Reprint of the ed. published by Winchester Press, New York
ER  -