Philip's gems of the world
Guide to the indentification and use of gemstones. Includes the geology, chemistry and properties of gemstones, what to look for when buying and how to care for them, plus information on the diamond industry.
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
London
Philip's
c2008.
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| Pynciau: | |
| Mynediad Ar-lein: | Table of contents only |