Ruby & Sapphire • A Gemologist's Guide (2017) • Lotus Gemology

3 January 2017

Ruby & Sapphire  •  A Gemologist's Guide

Richard W. Hughes, with Wimon Manorotkul & E. Billie Hughes  |  2017

Designed as a companion to Ruby & Sapphire: A Collector's Guide, this massive volume is aimed specifically at working gemologists, appraisers and students. Based on Richard W. Hughes' 1997 classic, Ruby & Sapphire, this edition is fully updated. The product of nearly 40 years of firsthand experience and research, it covers every aspect of the subject from A–Z. History, sources, prices, quality analysis, synthetics and treatments, everything is here. With over 1000 photos, maps and illustrations and 3500 references, Ruby & Sapphire—A Gemologist’s Guide represents the most comprehensive book ever written on a single precious stone.

Ruby & Sapphire •  A Gemologist's Guide order page 

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Gem & Crystal Optics with the Refractometer

1 October 2008

The optical properties of crystals are intimately related to their crystal structures. This article examines the precise relationship between optic character and sign and crystal structure.

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Introduction to Infrared Spectroscopy (FTIR) in Gemology

1 April 2007

The use of Fourier-Transform Infrared Spectroscopy (FTIR) in gem identification, with examples of sapphire & jadeite.

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Fiber-Optic Light in Gemology • Living in the Dark Ages

1 July 2005

Fiber-optic lighting is one of the most useful form of lighting in the gemological laboratory. With it, we are able to see inclusions that would otherwise be invisible.

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Gemology, Mineral and Jewelry Links • Axis of Interest

1 November 1998

Links to websites related to gemology, gemstones, minerals and jewelry.

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Ruby & Sapphire (1997) • Inclusions in Corundum

1 January 1997

Inclusions are among the most important features for identifying ruby and sapphire. This is the chapter on ruby and sapphire inclusions from Richard Hughes' 1997 book, Ruby & Sapphire.

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