Tropical Gemstones (Periplus Nature Guides)
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Word Count
16,000 words, Guess
Page Count
64 pages
Physical Format
Hardcover
Identifiers
- ISBN-109625931848
- ISBN-139789625931845
- Goodreads2010230
- Better World Books9789625931845
- Open LibraryOL9374158M
First Sentence
One of the most durable of gems-second in hardness only to diamond-the ruby is a crystalline form of aluminium oxide, infused with trace elements of chromium which gives the gemstone its red color.
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