sapphire

  • At the Lotus Gemology laboratory in Bangkok, we often get parcels of relatively uniform stones. But sometimes it is in this routine testing that we uncover surprises.

  • The early history of beryllium diffusion in sapphire, starting with the 2001 appearance of large numbers of padparadscha sapphires in the Thai gem market.

  • A brief history of Burmese (Myanmar) sapphires, along with details of some of the major pieces of yore.

  • An essay on buying gems at the source in Asia, with a discussion of how con men play on the greed of those who believe gems will be cheaper at the mines.

  • The history of glass-infilling in blue sapphire, along with a description of the latest treatment generation developed in Chanthaburi, Thailand.

  • Developing a comprehensive colored stone grading system has been the dream of gemologists since the late 1970's, but despite a number of valient attempts, we are no closer to the goal today than we were four decades ago. This article examines the various problems of colored stone grading, explaining why the challenges are at least an order of magnitude greater than the grading of diamonds.

  • Corundum

    Richard W. Hughes  |  1990

    Rubies and sapphires are widely considered to be among the most sought after and precious of gems. Together they account for over fifty percent of the world trade in colored gemstones. This book is the first from Richard Hughes on the subject, and the first major work to be devoted entirely to the corundum family of gemstones. It covers all aspects of rubies and sapphires, beginning with their history, chemical and physical properties. Other chapters look at treatments, synthetic corundums, methods of fashioning, famous rubies and sapphires, formation of corundum deposits and world sources, providing a valuable reference source for jewelers, gemologists, students, and the general reader.

    Out-of-print. Click here to search for a copy

  • Diamond: An Early History of the King of Gems by Jack Ogden, 2018. Yale University Press, New Haven and London, www.yalebooks.com/www.yalebooks.co.uk, 388 pages, illus., ISBN 978-0-300-21566-3. $40 hardcover.

  • Since the late 1960's, East Africa has been home to some of planet earth's greatest gem discoveries. And yet, little has been written about certain of these finds. In the autumn of 2007, the authors set out to fill in the gaps, specifically regarding Tanzania's Mahenge, Songea and Tunduru regions.

  • The role of fiber-optic lighting in gemological microscopy.

  • A discussion of rutile silk in corundum and its use in detecting artificial heat treatment. Careful examination of these "silk" inclusions can provide vital clues to unmask heated gems.

  • Why should Hugh Hefner be the only one who has enjoyed twins? This special Hyperion Inclusion Gallery features images contained in the Lotus Gemology Hyperion Inclusion Database, but are shown as pairs so that one can directly compare details like changes in lighting and treatments.


  • Many gemologists have difficulty mastering the direct-vision spectroscope. This article eases the pain.

  • The ethics of gem enhancement disclosure.

  • One of the greatest gemological challenges is determining if a ruby or sapphire has been heat treated. UV fluorescence can assist in that identification, as well as detecting fillers in emerald.

  • The Thai city of Chanthaburi (จันทบุรี) may be small, but it has played an important role in both the history of Thailand and the gem trade. Taking its name from the Sanskrit word for moon ('chan'), this petite town is among the most charming in the Land of Smiles.

  • For those who wish to explore the literature of inclusions in gemstones further, we have selected the following articles and books that are of particular merit. Most of these are cited in the Lotus Gemology Hyperion Inclusion Database, but are listed below in a more convenient summary format. Many of the links will allow you to download a PDF copy of the original article.

  • Inside Out: Gemology Through Lotus-Colored Glasses

    Introducing…

    Inside Out: GEM•ology Through Lotus-Colored Glasses

    by

    E. Billie Hughes  |  Richard W. Hughes  |  Wimon Manorotkul

    with a foreword by Paolo Minieri

    Chinese translation by Jason C.H. Kao (高嘉兴), with Jinding Yu (俞瑾玎) and Bonnie Chao (晁艳)

    From the dawn of time, precious stones have both attracted and fascinated humans in ways that few other items could. For 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.

    This book presents a completely fresh approach to the subject. Dubbing it humanistic gemology, the authors take readers around the world, showing the places they have explored in their search for gems, along with the people and cultures encountered along the way.

    Within this volume, remarkable photographs of the human world are interwoven with images of the microscopic realm of the gems themselves. In a lifetime beset by time control, where living is broken into ever smaller bits, as you browse through these pages suddenly you plunge into a domain of frozen time, one that affords vistas of millions or even billions of years. For jewels offer not just superficial beauty, but a window on the primordial forces that birthed both our planet and universe.

    Inside Out – Gemology Through Lotus-Colored Glasses represents a fascinating new direction for gemology, linking the external and internal worlds of precious stones for the first time. 

    Published 2020; Shipping October 2019

    Regular Edition – Hardcover
    Price: US$100 (Thai Baht 3100) + Shipping & Handling

    Special Limited Edition of 50 Copies – Signed by all Three Authors – Numbered – With Slipcase
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    Inside Out Limited Edition with Slipcase

    Limited edition with slipcase

    International Shipping & Handling from Thailand
    Ships via International Parcel Air (2–3 weeks)

    Hardcover with Dust Jacket
    152 pages; 270 x 360 mm (10.6 x 14.2 inches); 2.5 kg shipping weight
    Full Color Throughout  |  Bilingual text in English & Simplified Chinese

    Once you click the "Add to Cart" button below, you can select the quantity on the next page.
    For orders of seven copies or more, please contact us.

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    Title Page

    Inside Out: Gemology Through Lotus-Colored Glasses – Title Page

    Introduction

    Inside Out: Gemology Through Lotus-Colored Glasses

    Inside Out: Gemology Through Lotus-Colored Glasses

    Inside Out: Gemology Through Lotus-Colored Glasses

    Sample Interior Spreads

    Inside Out: Gemology Through Lotus-Colored Glasses

    Inside Out: Gemology Through Lotus-Colored Glasses

    Inside Out: Gemology Through Lotus-Colored Glasses

    Inside Out: Gemology Through Lotus-Colored Glasses

    Inside Out: Gemology Through Lotus-Colored Glasses

    Inside Out: Gemology Through Lotus-Colored Glasses

    Inside Out: Gemology Through Lotus-Colored Glasses

    Inside Out: Gemology Through Lotus-Colored Glasses

    Inside Out: Gemology Through Lotus-Colored Glasses

    Inside Out: Gemology Through Lotus-Colored Glasses

    Ruby & Sapphire: A Gemologist's Guide – Index

     

     

     

    A few comments from reviewers…

    I am doubtless readers both inside and outside of the gem trade will enthusiastically welcome Inside Out. Buy it, read it, give it away. I am fully confident you will be satisfied, ingratiated and inspired.
    Jeffery Bergman – InColor Magazine
     
     
     
  • Inside Out  •  GEM•ology Through Lotus-Colored Glasses

    E. Billie Hughes, Richard W. Hughes, Wimon Manorotkul  |  2020

    From the dawn of time, precious stones have both attracted and fascinated humans in ways that few other items could. For 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.

    This book presents a completely fresh approach to the subject. Dubbing it humanistic gemology, the authors take readers around the world, showing the places they have explored in their search for gems, along with the people and cultures encountered along the way. Within this volume, remarkable photographs of the human world are interwoven with images of the microscopic realm of the gems themselves. In a lifetime beset by time control, where living is broken into ever smaller bits, as you browse through these pages suddenly you plunge into a domain of frozen time, one that affords vistas of millions or even billions of years. For jewels offer not just superficial beauty, but a window on the primordial forces that birthed both our planet and universe.

    Inside Out – Gemology Through Lotus-Colored Glasses represents a fascinating new direction for gemology, linking the external and internal worlds of precious stones for the first time. 

    Inside Out | GEM•ology Through Lotus-Colored Glasses Order Page 

  • zircon in sapphire

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