Author: Publisher:
ISBN:
Category : Gemology
Languages : en
Pages : 406
Book Description
Gems & Gemology
Author: Dictionary of Gems and Gemology
Author: Mohsen Manutchehr-DanaiPublisher: Springer Science & Business Media
ISBN: 3662042886
Category : Science
Languages : en
Pages : 575
Book Description
The rapid growth of gemological sciences and mineralogy demands a dictionary such as this for gemologists, mineralogists, geologists, jewel dealers, industry and hobbyists. With some 16,000 comprehensive definitions, supplemented by more than 250 diagrams and figures, this is a one-stop reference to any matter dealing with gems and gemology.
Bibliography of North American Geology
Author: Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 1032
Book Description
1919/28 cumulation includes material previously issued in the 1919/20-1935/36 issues and also material not published separately for 1927/28. 1929/39 cumulation includes material previously issued in the 1929/30-1935/36 issues and also material for 1937-39 not published separately.
Gemstones and Their Origins
Author: P.C. KellerPublisher: Springer Science & Business Media
ISBN: 1468466747
Category : Science
Languages : en
Pages : 315
Book Description
Each gem deposit-whether of primary origin in the parent rocks; or secondary as alluvial placers in valley floors, river gravels, or the sand of oceanic shelves presents an eloquent chronicle of the Earth's life story. It reveals to the expert the prodigious processes which formed the present crust of our planet, of which this volume discloses a small but exciting detail. The materials of the Earth's crust are the rocks. In this book, the author expounds on how they were formed, why they altered, why they became the cradles of precious gemstones, how they are categorized, and how they are now exploited by man. What initiates the growth of gemstones? How do they crystallize? Why do gemstones of the same species, originating from different sources, vary? What causes the occurrence of varieties? Why do diamonds, unlike other precious stones, occur not near the Earth's surface in its crust, but deep down beneath it in the upper mantle? These are only a few of the entrancing subjects discussed in this enlightening volume. The reader learns that the Earth is surprisingly alive and altering constantly-sometimes through slow and equable changes and at times by violent and tremendous cataclysms, events from which gemstones issue.
Gems in the Early Modern World
Author: Michael BycroftPublisher: Springer
ISBN: 3319963791
Category : History
Languages : en
Pages : 369
Book Description
This edited collection is an interdisciplinary study of gems in the early modern world. It examines the relations between the art, science, and technology of gems, and it does so against the backdrop of an expanding global trade in gems. The eleven chapters are organised into three parts. The first part sets the scene by describing how gems moved around the early modern world, how they were set in motion, and how they were pulled together in the course of their travels. The second part is about value. It asks why people valued gems, how they determined the value of a given gem, and how the value of a gem was connected to its perceived place of origin. The third part deals with the skills involved in cutting, polishing, and mounting gems, and how these skills were transmitted and articulated by artisans. The common themes of all these chapters are materials, knowledge and global trade. The contributors to this volume focus on the material properties of gems such as their weight and hardness, on the knowledge involved in exchanging them and valuing them, and on the cultural consequences of the expanding trade in gems in Eurasia and the Americas.
Exhibiting Dilemmas
Author: Amy HendersonPublisher: Smithsonian Institution
ISBN: 1588345513
Category : Art
Languages : en
Pages : 361
Book Description
In twelve essays on such diverse Smithsonian Institution holdings as the Hope Diamond, the Wright Flyer, wooden Zuni carvings, and the Greensboro, North Carolina Woolworth lunch counter that became a symbol of the Civil Rights movement, Exhibiting Dilemmas explores a wide range of social, political, and ethical questions faced by museum curators in their roles as custodians of culture. Focusing on the challenges posed by the transformation of exhibitions from object-driven “cabinets of curiosities” to idea-driven sources of education and entertainment, the contributors—all Smithsonian staff members—provide a lively and sometimes provocative discussion of the increasingly complex enterprise of acquiring and displaying objects in a museum setting.
Minerals Yearbook
Author: Geological Survey Bulletin
Author: Information Circular
Author: Ruby and Sapphire
Author: Richard W. HughesPublisher:
ISBN: 9780964509719
Category :
Languages : en
Pages : 816
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.