TY  - GEN
AU  - Pedersen, Maggie Campbell
TI  - Gem and ornamental materials of organic origin
SN  - 0750658525
PY  - 2004///
CY  - Oxford
PB  - Elsevier Butterworth-Heinemann
KW  - GEMS- Organic Origin
KW  - PRECIOUS STONES
N1  - Glossary, bibliography & index included
ER  -