TY  - BOOK
AU  - Bonewitz,Ra
TI  - Gems
T2  - DK Smithsonian nature guide
SN  - 1465402187
AV  - QE392 .B573 2013
U1  - 553.8 SMI 
PY  - 2013///
CY  - New York
PB  - DK Pub.
KW  - Precious stones
KW  - Handbooks, manuals, etc
KW  - Identification
KW  - Gems
N1  - Includes index; What is a gem? -- How gems form -- Crystals -- Classifying gems -- Physical properties -- Optical properties -- Where gemstones are found -- Mining gemstones -- Cutting gems -- Polishing and engraving gems -- Gem enhancement -- Synthetic gems -- History and folklore -- Collecting gems -- Gemstones. Precious metals -- Cut stones -- Organics -- Glossary
UR  - http://www.loc.gov/catdir/enhancements/fy1307/2012289835-d.html
ER  -