 | | Book | | A Field Guide in Color to MINERALS, ROCKS AND PRECIOUS STONES A comprehensive guide to the natural riches...the lover and collector of minerals, rocks and precious stones. Over 550 examples are beautifully illustrated...MINERALS,ROCKS and PRECIOUS STONES A Field Guide in Color to MINERALS, ROCKS AND PRECIOUS STONES By Dr...Light Precious Stones Treatment of Precious Stones — Cutting Form Imitations and Synthetic Precious Stones...Stones Identification of Precious Stones 164 165 165 166 Rocks 168 168 170 170 Classification of Rocks | | | Book | | Field Guide in Colour to MINERALS, ROCKS AND PRECIOUS STONES By Dr. Jaroslav Bauer Photographs by Frantisek...35 Precious Stones Treatment of Precious Stones — Cutting Form Imitations and Synthetic Precious Stones...Stones Identification of Precious Stones 164 165 165 166 Rocks Classification of Rocks Structure and Texture...Rocks Identification of Rocks 168 168 170 170 Precious Stones and Rocks (Identification Tables and Plates)...referred to the list of reference books on page 208. Precious stones and rocks arc mentioned fairly briefly |  | | Book | | Institut für Mineralogie, TU Bergakademie Freiberg Germany Editorial Office MDPI St. Alban-Anlage 66 4052...the Technical University Bergakademie Freiberg (Germany). He graduated in Mineralogy and Geochemistry in...specifics of SiO2 modifications and varieties (e.g., opal, chalcedony, agate, quartz, amethyst). Following...Mineralogy, TU Bergakademie Freiberg, 09599 Freiberg, Germany; jens.goetze@mineral.tu-freiberg.de Received: 12...seifertite, high-pressure silica glass, moganite or opal, are relatively rare in extraterrestrial materials |  | | Book | | Institut für Mineralogie, TU Bergakademie Freiberg Germany Editorial Office MDPI St. Alban-Anlage 66 4052...the Technical University Bergakademie Freiberg (Germany). He graduated in Mineralogy and Geochemistry in...specifics of SiO2 modifications and varieties (e.g., opal, chalcedony, agate, quartz, amethyst). Following...Mineralogy, TU Bergakademie Freiberg, 09599 Freiberg, Germany; jens.goetze@mineral.tu-freiberg.de Received: 12...seifertite, high-pressure silica glass, moganite or opal, are relatively rare in extraterrestrial materials |  | | Book | | mineral groups, but the interests of collectors of precious stones, ore minerals and other specialities were...light in the stratified structure of feldspars. Precious opal exhibits a brilliant play of colours called...light, which is most important, particularly in precious stones. The following degrees of transparency...thick plates of rock crystal - a, smoky quartz - b, opal - c, and jasper - d .. ffffJ.t.i1!!}~{{tt1tWiiP{:...displaying numerous microscopic inclusions, such as opal and cordierite. Pearly lustre - typical of transparent | | | Book | | mineral groups, but the interests of collectors of precious stones, ore minerals and_ other specialities were...light in the stratified structure of feidspars. Precious opal exhibits a brilliant play of colours called...light, which is most important, particularly in precious stones. The following degrees of transparency...thick plates of rock crystal — a, smoky quartz — b, opal — c, and jasper —d Transparent minerals — when...displaying numerous microscopic inclusions, such as opal and cordierite. Pearly lustre — typical of transparent |
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