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Author: Richard W. Hughes
Publisher:
ISBN: 9780964509719
Category :
Languages : en
Pages : 816
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Book Description
From the dawn of time, ruby and sapphire have both attracted and fascinated humans in ways that few other items could.While objects of desire are found throughout the natural world, physical beauty is too often ephemeral. From the allure of a man, woman, flower or butterfly, through the fleeting moments of a sunset, there is little that lasts and practically nothing that can be passed down to our descendants. The exception is precious stones. Not only are they the most durable creations of mother nature, but their visual splendor is truly eternal.In this companion to his 2013 book, Ruby & Sapphire--A Collector's Guide, Richard Hughes examines these gems from the gemological standpoint, delving into these gems not just from the aesthetic, but also from the scientific point of view.The product of nearly 40 years of firsthand experience, it covers every aspect of the subject from A-Z. History, sources, prices, quality analysis, synthetics and treatments, everything is here. Ruby & Sapphire--A Gemologist's Guide represents the most comprehensive book ever written on a single precious stone. With over 1000 photos, maps and illustrations and 3500 references, it is nothing less than a tour-de-force of gemological scholarship.
Author: Richard W. Hughes
Publisher:
ISBN: 9780964509719
Category :
Languages : en
Pages : 816
Get Book Here
Book Description
From the dawn of time, ruby and sapphire have both attracted and fascinated humans in ways that few other items could.While objects of desire are found throughout the natural world, physical beauty is too often ephemeral. From the allure of a man, woman, flower or butterfly, through the fleeting moments of a sunset, there is little that lasts and practically nothing that can be passed down to our descendants. The exception is precious stones. Not only are they the most durable creations of mother nature, but their visual splendor is truly eternal.In this companion to his 2013 book, Ruby & Sapphire--A Collector's Guide, Richard Hughes examines these gems from the gemological standpoint, delving into these gems not just from the aesthetic, but also from the scientific point of view.The product of nearly 40 years of firsthand experience, it covers every aspect of the subject from A-Z. History, sources, prices, quality analysis, synthetics and treatments, everything is here. Ruby & Sapphire--A Gemologist's Guide represents the most comprehensive book ever written on a single precious stone. With over 1000 photos, maps and illustrations and 3500 references, it is nothing less than a tour-de-force of gemological scholarship.
Author: Douglas E. Christie
Publisher: Oxford University Press, USA
ISBN: 0199812322
Category : Nature
Languages : en
Pages : 483
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Book Description
In The Blue Sapphire of the Mind, Douglas E.
Author: Andrew Walsh
Publisher: University of Toronto Press
ISBN: 1442694750
Category : Social Science
Languages : en
Pages : 161
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Book Description
Since the 1990s, the Ankarana region of northern Madagascar has developed a reputation among globe-trotting gemstone traders and tourists as a source of some of the world's most precious natural wonders. Although some might see Ankarana's sapphire and ecotourist trades as being at odds with each other, many local people understand these trades to be fundamentally connected, most obviously in how both serve foreign demand for what Madagascar has to offer the world. Walsh explores the tensions and speculations that have come with the parallel emergence of these two trades with sensitivity and a critical eye, allowing for insights into globalization, inequality, and the appeal of the "natural." For more information, and to read a hyperlinked version of the first chapter online, visit https://madeinmadagascar.wordpress.com.
Author: Sapphire
Publisher: Vintage Books
ISBN: 9780307474841
Category : Fiction
Languages : en
Pages : 139
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Book Description
A courageous and determined young teacher opens up a new world of hope and redemption for sixteen-year-old Precious Jones, an abused young African American girl living in Harlem who was raped and left pregnant by her father.
Author:
Publisher: UM Libraries
ISBN:
Category : Engineering
Languages : en
Pages : 300
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Book Description
Author:
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 328
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Book Description
Author: Elena R. Dobrovinskaya
Publisher: Springer Science & Business Media
ISBN: 0387856951
Category : Technology & Engineering
Languages : en
Pages : 493
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Book Description
By the second half of the twentieth century, a new branch of materials science had come into being — crystalline materials research. Its appearance is linked to the emergence of advanced technologies primarily based on single crystals (bulk crystals and films). At the turn of the last century, the impending onset of the “ceramic era” was forecasted. It was believed that ceramics would play a role comparable to that of the Stone or Bronze Ages in the history of civilization. Naturally, such an assumption was hypothetical, but it showed that ceramic materials had evoked keen interest among researchers. Although sapphire traditionally has been considered a gem, it has developed into a material typical of the “ceramic era.” Widening the field of sapphire application necessitated essential improvement of its homogeneity and working characteristics and extension of the range of sapphire products, especially those with stipulated properties including a preset structural defect distribution. In the early 1980s, successful attainment of crystals with predetermined char- teristics was attributed to proper choice of the growth method. At present, in view of the fact that the requirements for crystalline products have become more str- gent, such an approach tends to be insufficient. It is clear that one must take into account the physical–chemical processes that take place during the formation of the real crystal structure, i.e., the growth mechanisms and the nature and causes of crystal imperfections.
Author:
Publisher:
ISBN:
Category : College student newspapers and periodicals
Languages : en
Pages : 560
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Book Description
Author: William Dwight Whitney
Publisher:
ISBN:
Category : Atlases
Languages : en
Pages : 910
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Book Description
Author: William Dwight Whitney
Publisher:
ISBN:
Category : Atlases
Languages : en
Pages : 914
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Book Description
