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Guía de las Piedras Preciosas y Ornamentales

12PP008

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Professor Walter Schumann provides us with a complete vision, fully up-to-date on the fascinating world of precious stones. You can see more of 1900 colour photographs of gemstones, both in rough and in different sizes. The illustrations are accompanied by accurate descriptions.

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The first chapters of the book deal with the formation, structure and properties of precious stones, deposits, extraction, and worked, imitations and forgeries, as well as the classification of gemstones. There are also sections devoted to the synthetic gemstones, the therapeutic use of precious stones, the new reservoirs, the modern procedures of measurement and analysis techniques and more current to the worked and for the verification of the authenticity. Tables of determination to complete this manual only for collectors, jewelers and lovers of all precious stones.

Preface. Introduction. The precious stones and ornamental in the life of men. Definition of concepts. The names of the precious stones and ornamental. Formation and structure. Systems are crystallographic. Properties of precious stones. Hardness. Exfoliation and fracture. Density and specific weight. Units of weight. Optical properties. Color. Color of the hatch. Change of color. Refraction of the light. Birefringence. Dispersion. Absorption spectra. Transparency. Brightness. Pleochroism. Figures light and iridescence. Luminescence. Inclusions. Deposits and extraction. Types of deposits. Methods of extraction. Worked. Glyptic. Worked in the agate. Worked of coloured stones. Stones spherical. Stones baroque. Perforated. Worked of the diamond. Types and forms of size. Classification of precious stones. Scientific classification. Commercial classification. Price of precious stones. Description of the precious stones. Precious stones and ornamental most well-known. Diamond. Deposits diamantíferos. Extraction of diamonds. Trade of the diamond. Assessment of the quality of. Famous diamonds. Size of the diamond. Group of the corundum. Ruby. Sapphire. Group of beryl. Emerald. Aquamarine. Beryl noble. Chrysoberyl. Spinel. Topaz. Group of garnet. Group of tourmaline. Group of the espodúmena. Hiddenita. Kunzite. Quartz group. Rock crystal. Smoky quartz. Amethyst. Amethyst quartz. Citrine. Prasiolite. Rose quartz. Aventurita. Prase. Blue quartz. Quartz cat's eye. Hawk's eye. Eye of the tiger. Chalcedon. Carneola. Sardo. Chrysoprase. Heliotrope. Dendrite. Moss agate. Agate. Stones in layers. Jasper. Xilópalo. Group of opal. Group of jade. Peridot. Group of the zoisite. Tanzanite. Thulita. Aniolita. Hematite. Pyrite. Group of the feldspar. Amazonite. Stone of moon. Orthoclase. Labradorite. Stone of the sun. Rhodochrosite. Rodonita. Turquoise. Lapis lazuli. Sodalite. Azurite. Malachite. Precious stones and ornamental less well known. Andalusite. Euclasa. Hambergita. Cordierite. Fenaquita. Dumortierita. Danburita. Axinita. Benitoíta. Cassiterite. Epidoto. Vesubianita. Sinhalita. Cornerupina. Prehnita. Petalita. Escapolita. Diópsido. Berilonita. Brasilianita. Ambligonita. Enstatita. Lapis lazuli. Dioptasa. Apatite. Titanita. Kyanita. Scheelite. Variscite. Fluorite. Hemimorfita. Smithsonite. Escalerita. Cerusita. Crisocola. Serpentine. Stichtita. Ulexite. Iron-tiger. Precious stones and ornamental collectors. Rocks as gems and ornamental. Marble onyx. Sprudelstein. Marble landscape. Diorite of the orbicularis muscle. Obsidian. Moldavita. Alabaster. Agalmatolita. Sepiolita. Fossil. Precious stones and ornamental of organic origin. Coral. Jet. Coal fatty bituminous. Ivory. Odontolita. Amber. Pearls. Operculum. Mother-of-pearl. Imitations of the precious stones and ornamental. Imitations. Precious stones composed. Synthetic gemstones. Treatment. Proof of authenticity of the diamond. What's new in the market. Symbolism and therapeutic use of gemstones. Symbolism the cosmic-astral stones. Therapeutic use of gemstones. Bibliography. Tables of determination. Index

All of the gems and varieties of the world illustrated by nearly 1,900 color photographs

14th edition up-to-date

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Guía de las Piedras Preciosas y Ornamentales

Guía de las Piedras Preciosas y Ornamentales

Professor Walter Schumann provides us with a complete vision, fully up-to-date on the fascinating world of precious stones. You can see more of 1900 colour photographs of gemstones, both in rough and in different sizes. The illustrations are accompanied by accurate descriptions.

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