Author: P.C. Keller
Publisher: 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.
Gemstones and Their Origins
Author: P.C. Keller
Publisher: 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.
Publisher: 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.
Antique Gems
Author: Charles William King
Publisher:
ISBN:
Category : Art, Ancient
Languages : en
Pages : 580
Book Description
Publisher:
ISBN:
Category : Art, Ancient
Languages : en
Pages : 580
Book Description
Precious Stones and Their Stories - An Article on the History of Gemstones and Their Use
Author: A. Hyatt Verrill
Publisher: Read Books Ltd
ISBN: 1473356458
Category : Nature
Languages : en
Pages : 57
Book Description
A scientific history of gemstones and crystals around the world. Featuring the origin, symbolism, and uses of various precious stones. This detailed article explores the history of gemology and crystallography and is an excellent read for those wishing to deepen their knowledge of the subjects. First published in 1939, Precious Stones and Their Stories was written by A. Hyatt Verrill, a respected nature historian.
Publisher: Read Books Ltd
ISBN: 1473356458
Category : Nature
Languages : en
Pages : 57
Book Description
A scientific history of gemstones and crystals around the world. Featuring the origin, symbolism, and uses of various precious stones. This detailed article explores the history of gemology and crystallography and is an excellent read for those wishing to deepen their knowledge of the subjects. First published in 1939, Precious Stones and Their Stories was written by A. Hyatt Verrill, a respected nature historian.
Precious Stones and Gems
Author: Edwin William Streeter
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 430
Book Description
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 430
Book Description
The Natural History, Ancient and Modern, of Precious Stones and Gems, and of the Precious Metals
Author: Charles W. King
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 474
Book Description
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 474
Book Description
Precious stones and gems, their history, sources and characteristics
Author: Edwin W. Streeter
Publisher: Рипол Классик
ISBN: 5878152762
Category : History
Languages : en
Pages : 379
Book Description
Publisher: Рипол Классик
ISBN: 5878152762
Category : History
Languages : en
Pages : 379
Book Description
Diamonds and Precious Stones
Author: Harry Emanuel
Publisher:
ISBN:
Category : Diamonds
Languages : en
Pages : 312
Book Description
Publisher:
ISBN:
Category : Diamonds
Languages : en
Pages : 312
Book Description
Arab Roots of Gemology
Author: Aḥmad ibn Yūsuf Tīfāshī
Publisher: Scarecrow Press
ISBN: 9780810832947
Category : Crafts & Hobbies
Languages : en
Pages : 298
Book Description
Samar Najm Abul Huda's translation of Ahmad ibn Yusuf al Tifaschi's study of gems. Born in 1184, Al Tifaschi first learned about gems from his father, and augmented his knowledge through readings of Aristotle, Theophrastus, and Pliny, as well as through extensive travels to mines and trading centers. In 1253, he wrote what later became known as the most 'methodical and complete' work on precious stones. Gemologists of today are still astounded by the advanced observations that Al Tifaschi made in this work.
Publisher: Scarecrow Press
ISBN: 9780810832947
Category : Crafts & Hobbies
Languages : en
Pages : 298
Book Description
Samar Najm Abul Huda's translation of Ahmad ibn Yusuf al Tifaschi's study of gems. Born in 1184, Al Tifaschi first learned about gems from his father, and augmented his knowledge through readings of Aristotle, Theophrastus, and Pliny, as well as through extensive travels to mines and trading centers. In 1253, he wrote what later became known as the most 'methodical and complete' work on precious stones. Gemologists of today are still astounded by the advanced observations that Al Tifaschi made in this work.
The Natural History of Gems Or Decorative Stones
Author: Charles William King
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 396
Book Description
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 396
Book Description
Precious Stones and Gems
Author: Edwin William Streeter
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 306
Book Description
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 306
Book Description