Gems & Gemology Winter 2024, Vol. 60, No. 4

Winter 2024 G&G Publication Information


Editorial Staff

Editor-in-Chief  
Duncan Pay
Editors, Micro-World 
Nathan Renfro
John I. Koivula
Tyler Smith
Editor-in-Chief Emerita
Alice S. Keller
Managing Editor 
Stuart D. Overlin
Editors, Gem News 
Gagan Choudhary
Guanghai Shi
Senior Technical Editor
Jennifer Stone-Sundberg
Editor
Brooke Goedert
Editors, Colored Stones Unearthed
Aaron C. Palke
James E. Shigley
Technical Editor
Tao Z. Hsu
Associate Editor
Erica Zaidman
Editor, Diamond Reflections
Evan M. Smith
Assistant Editor
Erin Hogarth
Editors, Lab Notes 
Thomas M. Moses
Shane F. McClure
Sally Eaton-Magaña
Artitaya Homkrajae
Contributing Editors 
James E. Shigley
Raquel Alonso-Perez
Customer Service
(760) 603-4200
gandg@gia.edu

Production Staff

Creative Director
Faizah Bhatti
Photo/Video Producers
Kevin Schumacher
Emily Lane
Video Production
Albert Salvato
Production and
Multimedia Specialist

Michael Creighton
Photographer
Robert Weldon

Editorial Review Board

Ahmadjan Abduriyim
Tokyo, Japan
Peter Heaney
University Park, Pennsylvania
Nathan Renfro
Carlsbad, California
Timothy Adams
San Diego, California
Richard W. Hughes
Bangkok, Thailand
George R. Rossman
Pasadena, California
James E. Butler
Washington, DC
Jaroslav Hyršl
Prague, Czech Republic
Sudarat Saeseaw
Bangkok, Thailand
Alan T. Collins
London, UK
Dorrit Jacob
Canberra, Australia
Karl Schmetzer
Petershausen, Germany
Aurélien Delaunay
Paris, France
A.J.A. (Bram) Janse
Perth, Australia
Andy Shen
Wuhan, China
Dona Dirlam
Carlsbad, California
Mary L. Johnson
San Diego, California
Guanghai Shi
Beijing, China
Sally Eaton-Magaña
Carlsbad, California
Robert E. Kane
Helena, Montana
Elisabeth Strack
Hamburg, Germany
John L. Emmett
Brush Prairie, Washington
Stefanos Karampelas
Paris, France
Nicholas Sturman
Bangkok, Thailand
Emmanuel Fritsch
Nantes, France
Lore Kiefert
Lucerne, Switzerland
Tim Thomas
Portland, Oregon
Eloïse Gaillou
Paris, France
Simon Lawson
Maidenhead, UK
D. Brian Thompson
Florence, Alabama
Al Gilbertson
Carlsbad, California
Ren Lu
Wuhan, China
Fanus Viljoen
Johannesburg, South Africa
Gaston Giuliani
Nancy, France
Thomas M. Moses
New York, New York
Wuyi Wang
New York, New York
Lee A. Groat
Vancouver, Canada
Laura Otter
Canberra, Australia
Christopher M. Welbourn
Reading, UK
Yunbin Guan
Pasadena, California
Aaron C. Palke
Carlsbad, California
Chunhui Zhou
New York, New York
George Harlow
New York, New York
Ilene Reinitz
Chicago, Illinois
J.C. (Hanco) Zwaan
Leiden, The Netherlands

About the Cover

This issue examines analytical tools used in modern gemology. One is DiamondView fluorescence imaging, which reveals structural features of the three gems on the cover (left to right): an I-color round brilliant diamond, a non-nacreous natural pearl cross section, and a blue sapphire. Images by Jemini Sawant, Ravenya Atchalak, and Aaron Palke.

Printing is by L+L Printers, Carlsbad, CA.

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© 2024 Gemological Institute of America
All rights reserved.
ISSN 0016-626X

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Gems & Gemology’ s impact factor is 1.6, according to the 2023 Journal Citation Reports by Clarivate Analytics (issued June 2024). G&G is abstracted in Thomson Reuters products (Current Contents: Physical, Chemical & Earth Sciences and Science Citation Index—Expanded, including the Web of Knowledge) and other databases:

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Manuscript Submissions

Gems & Gemology, a peer-reviewed journal, welcomes the submission of articles on all aspects of the field. Please see the Author Guidelines at www.gia.edu/gems-gemology-author-guidelines or contact the editors (gandgeditorial@gia.edu). Letters on articles published in G&G are also welcome. Please note that Field Reports, Lab Notes, Gem News International, Micro-World, Colored Stones Unearthed, Diamond Reflections, Charts, and In the Spotlight are not peer-reviewed sections but do undergo technical and editorial review.

Copyright and Reprint Permission

Abstracting is permitted with credit to the source. Libraries are permitted to photocopy beyond the limits of U.S. copyright law for private use of patrons. Instructors are permitted to reproduce isolated articles and photographs/images owned by G&G for noncommercial classroom use without fee. Use of photographs/images under copyright by external parties is prohibited without the express permission of the photographer or owner of the image, as listed in the credits. For other copying, reprint, or republication permission, please contact the editors (gandgeditorial@gia.edu).

Gems & Gemology is published quarterly by the Gemological Institute of America, a nonprofit educational organization for the gem and jewelry industry.

Any opinions expressed in signed articles are understood to be opinions of the authors and not of the publisher.