311 pages : illustrations (chiefly color) ; 20 cm.
text txt rdacontent
unmediated n rdamedia
volume nc rdacarrier
Note
Translation of: Edelsteine und Schmucksteine.
"1,500 photos of gems in rough and polished states"--Cover.
Col. map on back lining papers.
Bibliography
Includes bibliographical references (p. 285-286) and index.
Contents
Introduction -- Origin and structure of gemstones -- Properties of gemstones -- Deposits and production of gemstones -- Cutting and polishing of gems -- Classifications of gemstones -- Value of gemstones -- Description of gemstones -- Best-known gemstones -- Lesser-known gemstones -- Gemstones for collectors -- Rocks as gemstones -- Organic gemstones -- New on the market -- Imitation and synthetic gemstones -- Symbolic and beneficial gemstones -- Table of constants.
