The Gemmologist

The Gemmologist PDF Author:
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 868

Get Book Here

Book Description

The Gemmologist

The Gemmologist PDF Author:
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 868

Get Book Here

Book Description


Gemmologists' Compendium

Gemmologists' Compendium PDF Author: Robert Webster
Publisher: Van Nostrand Reinhold Company
ISBN:
Category : Design
Languages : en
Pages : 264

Get Book Here

Book Description


Secrets of the Gem Trade

Secrets of the Gem Trade PDF Author: Richard W. Wise
Publisher: Brunswick House
ISBN: 9780972822329
Category : Antiques & Collectibles
Languages : en
Pages : 0

Get Book Here

Book Description
Finally the real truth about how master jewellers, gemmologists and major auction houses value diamonds and colored gemstones.

Gems and Gemmology

Gems and Gemmology PDF Author: Stefanos Karampelas
Publisher: Springer Nature
ISBN: 3030354490
Category : Social Science
Languages : en
Pages : 120

Get Book Here

Book Description
This book provides a lucid introduction to the basics of gemmology. It familiarizes archaeologists, art historians and conservators with the science of gemstones and allows them to understand the basic concepts of their provenance, typology and treatments. Which are the main types of gems? What treatments can be applied? How does one analyse gems? How can gems contribute to archaeometrical research? This volume is written by four experts in the fields of gemmology and archaeometry and addresses both students who need an introduction to this field and professionals who want to refresh their knowledge of the topic. This work is part of a series of introductory texts that deal with a broad range of materials-related topics in archaeometry.

The Gemmologists' Compendium

The Gemmologists' Compendium PDF Author: Robert Webster
Publisher:
ISBN:
Category : Gems
Languages : en
Pages : 296

Get Book Here

Book Description


Gemmology

Gemmology PDF Author: P. G. Read
Publisher: Elsevier
ISBN: 1483144674
Category : Nature
Languages : en
Pages : 375

Get Book Here

Book Description
Gemmology is a text for students preparing for the Gemmological Association's Preliminary and Diploma examinations. The book is more expansive and up-to-date than the author's earlier book, Beginner's Guide to Gemmology. The book deals with the practical and theoretical sides of gemmology. Tracing the background and science of gemmology, the book covers the gem material, geological formation, and occurrence of gemstones on the earth. The composition of gemstones from the atoms, elements, molecules, and compounds comprising them is analyzed, and the relationship between chemical composition and durability of the stone is explained. The basics of crystallography is mentioned as a tool toward understanding gemmology after which cleavage, parting, and fracture are done. A gemstone's durability and hardness and how the latter influences engineering tests and the mining techniques are compared. An important test technique to identify unmounted stones is the measure of specific gravity using displacement measurement methods and hydrostatic methods. After more descriptive details are given in identification of gemstones, whether these are synthetic or simulants, through a comprehensive explanation of the materials found in these other gemstones, the fashioning, through shaping or polishing, of gemstones is explained. Emphasis is given on the critical angle in which light rays pass in different rock densities, and then the cutting styles, gemstone polishing, and grading are discussed. Students studying for the Gemmological Association's Preliminary and Diploma examinations, jewelers, lapidarists, and diamond cutters, as well as those engaged in the hobby of gemmology, will find this book helpful and full of information toward their endeavors and hobbies.

Gemmology

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

Get Book Here

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.

The Diamond Formula

The Diamond Formula PDF Author: Amanda S. Barnard
Publisher: Butterworth-Heinemann
ISBN: 9780750642446
Category : Science
Languages : en
Pages : 182

Get Book Here

Book Description
Provides a gemmologist, gemmological (or mineralogical) student, or interested party with an overview of the synthesis of diamonds. This book begins with the history of diamond synthesis, and the theories on which much of the early work was based, before discussing the principles on which the modern processes rely.

Tables of Gemstone Identification

Tables of Gemstone Identification PDF Author: Roger Dedeyne
Publisher: Gemstone Identification
ISBN: 9078768010
Category : Precious stones
Languages : en
Pages : 311

Get Book Here

Book Description


Gemmological Instruments

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

Get Book Here

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.