Gem Testing

Author: B. Anderson
Publisher: Read Books Ltd
ISBN: 1447494652
Category : Nature
Languages : en
Pages : 322

Book Description
This vintage book contains a complete guide to testing gems and gemstones for purity and authenticity. Complete with a plethora of useful illustrations and all the information a prospective or existing enthusiast might need to know about the subject, this book constitutes an ideal resource for anyone with an interest in lapidary and gem testing. The chapters of this volume include: “How to Use this Book”, “Refractive Index and its Measurements”, “Double Refraction and How to Detect It”, “Colour, Colour Filters and Dichroscope”, “The Specific Gravity of Gem-Stones and How to Measure It”, “Detection of Synthetic and Imitation Stones”, “The Use of the Microscope”, etcetera. This antiquarian book is being republished now in an affordable, modern edition - complete with a specially commissioned new introduction on gemmology.

Gem Identification Made Easy (4th Edition)

Author: Antoinette Matlins
Publisher: Turner Publishing Company
ISBN: 0943763894
Category : Antiques & Collectibles
Languages : en
Pages : 366

Book Description
one person can accomplish big things.

Gem Testing

Author: Basil William Anderson
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 262

Book Description

Gem Testing

Author: Basil William Anderson
Publisher:
ISBN:
Category : Precious stones
Languages : en
Pages : 394

Book Description

Gem Testing

Author: Basil William Anderson
Publisher: Butterworth-Heinemann
ISBN:
Category : Design
Languages : en
Pages : 502

Book Description

Gemmological Instruments

Author: Peter G Read
Publisher: Elsevier
ISBN: 1483192261
Category : Science
Languages : en
Pages : 341

Book Description
Gemmological Instruments deals with the developments in diamond grading equipment and gem testing instruments since the publication of the first edition in 1978. These developments include improvements in the versatility and styling of existing instruments such as the reflectivity meter, the composite spectroscope, and the refractometer. It also addresses the criticisms in the first edition and provides a discussion of the advantages and disadvantages of different gem testing equipment. This book is organized into 16 chapters that describe groundbreaking instruments like the thermal conductivity diamond testers and home-constructed items that while innovative have not yet been commercialized. There are also chapters dealing with microphotography and identification of synthetics and stimulants. This book also provides a listing of gemstone constants and characteristic inclusions in natural and synthetic gemstones. This book will be of interest to people interested in equipment for gem testing and diamond grading.

Ruby and Sapphire

Author: Richard W. Hughes
Publisher:
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.

Gem Identification Made Easy (5th Edition)

Author: Antoinette Matlins
Publisher: Turner Publishing Company
ISBN: 0943763932
Category : Antiques & Collectibles
Languages : en
Pages : 467

Book Description
This colorful book offers you a window into the world of Mahatma Gandhi, one of the most amazing people of the twentieth century. You will learn about Gandhi’s life—from his time as a student in London to his work for equality in South Africa and India—and his methods of peaceful, but not passive, resistance to injustice.

Gemmology

Author: Peter G. Read
Publisher: Butterworth-Heinemann
ISBN: 0750664495
Category : Design
Languages : en
Pages : 341

Book Description
This edition has been completely revised to cover the latest methods of gem enhancement and identification, as well as the most up-to-date test instruments and laboratory techniques.

Gem Identification Made Easy

Author: Antoinette Leonard Matlins
Publisher: Gemstone Press
ISBN: 0943763592
Category : Antiques & Collectibles
Languages : en
Pages : 386

Book Description
This revised edition covers the latest gems, synthetics, treatments and instruments. It is easy to use, practical and non-technical indicating how to identify diamonds, coloured gemstones and pearls, as well as separating them from fakes and look-alikes. The book explains what instruments are needed and how to use them, where to obtain such instruments and what should be seen for each gemstone. Anyone can learn to identify most of the gems and imitations found in the market place. This volume is the key to avoiding costly mistakes and recognising profitable opportunities.