Author: D. H. Ariyaratna
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 208

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Author: Yavorskyy Co Ltd.
Publisher:
ISBN: 9780692919682
Category :
Languages : en
Pages : 236

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Author: Kim Rix
Publisher:
ISBN: 9781912635238
Category : Antiques & Collectibles
Languages : en
Pages : 98

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Book Description
This travel guide is for anyone considering a trip to the beautiful country of Sri Lanka in search of a special memory to treasure forever. Written by Kim Rix, a gemmologist (GIA) and professional photographer who has travelled to more than 50 countries, this unique book unveils how you can become a `Gemstone Detective' on your next adventure. If you are considering purchasing a gemstone or piece of jewellery, this book is essential reading on the plane over to Sri Lanka! It is a mine of expert advice, insider information and practical tips to help you better understand the gemstone and jewellery market. As well as offering country-specific background and up-to-the-minute advice, the `Gemstone Detective' series, is a `how to' guide for anyone who wants to experience the fun, excitement and romance of buying unique and beautiful gems or jewellery in countries around the world renowned for their natural gemstones. Kim Rix is dedicated to visiting each country in the `Gemstone Detective' series to provide readers with the best advice and easy-to-follow steps to help travellers avoid the pitfalls, scams and disappointments of a bad buying decision.

Author: P.C. Keller
Publisher: Springer Science & Business Media
ISBN: 1468466747
Category : Science
Languages : en
Pages : 315

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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.

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: P. G. R. Dharmaratne
Publisher:
ISBN:
Category : Precious stone industry
Languages : en
Pages : 134

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Author: Lance Grande
Publisher: University of Chicago Press
ISBN: 0226305112
Category : Design
Languages : en
Pages : 387

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Book Description
"Gems and Gemstones" features nearly 300 color images of cut gems, precious and semiprecious stones, gem-quality mineral specimens, and fine jewelry to be unveiled in the new Grainger Hall of Gems at the Field Museum in Chicago.

Author: Yavoskyy Co Ltd.
Publisher:
ISBN: 9780692121412
Category :
Languages : en
Pages : 236

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Amethys, Andalusite, Andersine, Aquamarine, Axinite, Beryl, Beryllonite, Celestite, Chrome actinolite, Chrome tourmaline, Chrome vesuvianite, Chrysoberyl, Citrine, Clinohumite, Danburite, Demantoid, Diamond, Emerald, Forsterite, Grossular garnet, Hauynite, Hibonite, Idocrase, Indicolite, Jeremejewite, Kornerupine, Londonite, Malaia garnet, Mandarin garnet, Manganotantalite, Morganite, Orthoclase, Padparadscha, Painite, Paraiba, Pargasite, Petalite, Quarz, Rhodolite, Rhodonite, Rubellite, Ruby, Sapphire, Scapolite, Sphene, Spinel, Spodumene (kunzite), Taaffeite, Tanzanite, Topaz, Tourmaline, Tsavorite, Vayrynenite, Zircon

Author: Kennie Lyman
Publisher: Touchstone
ISBN: 9780671604301
Category : Nature
Languages : en
Pages : 388

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Book Description
Simon & Schuster's Guide to Gems and Precious Stones provides both the connoisseur and the casual collector with a compact, easy-to-use volume describing more than 100 rare varieties of minerals whose beauty and mystery have possessed our imaginations from time immemorial. More than 450 brilliant photographs accompany profiles of each gem, covering such aspects as appearance, physical properties -- density, hardness, refraction -- occurrence, and how to judge quality and value. Additional sections describe the process of cutting gemstones and the techniques professional gemologists use to evaluate a stone's weight and optical properties. Detailed and comprehensive, this book is essential for anyone interested in the study of gems and precious stones.

Author: George Frederick Kunz
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 42

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