This new book is a practical, comprehensive guide to the identification and use of precious and semi-precious gems, novelty stones, agates and crystals. Presenting the latest information on the gemstone industry, with an extensive ...
GEMS,GEMSTONES,VARIETIES,PRECIOUS GEMS,GEMSTONES WORLD MARKET,GEM CUTTING,GEM POLISHING
This new book is a practical, comprehensive guide to the identification and use of precious and semi-precious gems, novelty stones, agates and crystals. Presenting the latest information on the gemstone industry, with an extensive ...