"The spectacular landscapes of the San Juan Mountains in southwestern Colorado are graphic evidence of the violent geology that concentrated a wealth of minerals in the triangle loosely defined by the picturesque mining towns of Telluride, Silverton and Ouray. An ancient hunting ground of indigenous peoples, these rugged high peaks concealed gold and silver discovered by westerners only in the last 150 years. These discoveries spurred mi ..."
"Colorado's geological display is like that of no place else on Earth. The eastern half of the state is part of the Great Plains, a swath of low lying topography that was built on horizontal strata deposited by ancient seas. The Great Plains give way to the Rocky Mountains, which rise in ragged peaks six to seven thousand feet above the plains. The Rockies transition to the Colorado Plateau, a high desert of brightly colored sandstones a ..."
"Just over a century ago, celebrated Tiffany & Company gemologist George Frederick Kunz (1856 1932) published The Curious Lore of Precious Stones (1913), in which he wrote on birth or natal stones: The origin of the belief that to each month of the year a special stone was dedicated, and ... was endowed with a peculiar virtue for those born in that month and was their natal stone, may be traced back to the writings of Josephus, in the f ..."
"While the ancients referred to many purple stones as Amethyst, today the term is more exclusively applied to quartz in the violet spectrum. The gemstone has long been assigned spiritual and mystical properties including protection from inebriation. However, this like-named volume offers no protection from the intoxicating power of Amethyst - a collectible that is still very much collectable."
"More than 40 top mineral localities are featured in this Hardcover book, American Mineral Treasures. Released to commemorate the historic exhibits at the 2008 Tucson Gem and Mineral Show."
"Precious opal is a rainbow made tangible. Its spectral blaze of color moves, changes, intensifies, fades, or disappears with the slightest change in perspective. Opal's intriguing play of color and unique atomic arrangement have made it the subject of scientific probing from early optics in the 1850s to high tech photonics today. Equally challenging has been discovering opal's place in history. Its beauty begs to be enshrined in myt ..."
"Since antiquity, emerald has been one of the most highly valuated gemstones: the first known mines were those of Cleopatra in ancient Egypt. Two thousand years ago Pliny wrote, "Emerald-green is the most beautiful green of all." Leading researchers offer insight into many of the aspects of the world of emerald. What is an emerald? How does an emerald form? Where is emerald found? Worldwide localities Where are the richest deposits ..."
Edle Steine(1st Edition) by JeffScovil Kalender, Published by Kallhardt ISBN-13: 978-3-936388-75-6, ISBN: 3-936388-75-X
Mythos Tucson(1st Edition) ...oder warum zu einer Mineralienbörse in die Wüste? by Gerd M. Wiedenbeck, JeffScovil Hardcover, 352 Pages, Published 2009 by U/C - Tec Umweltconsulting Technologie Gmbh ISBN-13: 978-3-9813113-0-3, ISBN: 3-9813113-0-2
"China - ein riesiges Land und eine unerschöpfliche Quelle für wunderschöne Mineralien. In China werden schon seit vielen tausend Jahren Steine gesammelt. Aber erst Mitte der 1980er Jahre öffnete sich der chinesische Markt und es begann langsam ein Handel mit Mineralien in unserem westlichen Sinne. China ist seit einigen Jahren bekannt für ausgezeichnete Sammlerstücke - oft in einzigartiger Qualität. Unzählige Gruben und Bergwerke liefer ..."
"Das Dach der Welt - eine Welt der Achttausender und der Bergsteiger? Es ist weit mehr als das - es ist eine Welt der Mineralien und der Edelsteine von bisher kaum gekannter Schönheit. Eisige Gipfel und sonnenverbrannte Wüsten sind die beiden Extreme, die in Afghanistan und Pakistan aufeinandertreffen. In Fundstellen, die bis in 5000 m Höhe reichen, werden unter schwierigsten Bedingungen großartige Schätze geborgen. Der Zugang zu diesen ..."