EDITORIAL STAFF
| Editor-in-Chief Duncan Pay | Editors, Lab Notes Thomas M. Moses Shane F. McClure | Contributing Editors James E. Shigley Raquel Alonso-Perez |
| Managing Editor Stuart D. Overlin | Editors, Micro-World Nathan Renfro Elise A. Skalwold John I. Koivula | Editor-in-Chief Emeritus Alice S. Keller |
| Associate Editor Brooke Goedert | Editors, Gem News Emmanuel Fritsch Gagan Choudhary Christopher M. Breeding | Customer Service Martha Erickson (760) 603-4502 gandg@gia.edu |
| Technical Editors Tao Hsu Jennifer Stone-Sundberg | Assistant Editor Erin Hogarth |
PRODUCTION STAFF
| Creative Director Faizah Bhatti | Photographer Robert Weldon | Illustrator Russel Samson |
| Multimedia Associate Christopher Bonine | Photo/Video Producer Kevin Schumacher | |
| Video Production Larry Lavitt Pedro Padua Albert Salvato |
EDITORIAL REVIEW BOARD
| Ahmadjan Abduriyim Tokyo, Japan | Jaroslav Hyršl Prague, Czech Republic | Sudarat Saeseaw Bangkok, Thailand |
| Timothy Adams San Diego, California | Dorrit Jacob Canberra, Australia | Karl Schmetzer Petershausen, Germany |
| Edward W. Boehm Chattanooga, Tennessee | A.J.A. (Bram) Janse Perth, Australia | Andy Shen Wuhan, China |
| James E. Butler Washington, DC | Mary L. Johnson San Diego, California | Guanghai Shi Beijing, China |
| Alan T. Collins London, UK | Stefanos Karampelas Paris, France | James E. Shigley Carlsbad, California |
| Sally Eaton-Magaña Carlsbad, California | Lore Kiefert Lucerne, Switzerland | Elisabeth Strack Hamburg, Germany |
| John L. Emmett Brush Prairie, Washington | Simon Lawson Maidenhead, UK | Nicholas Sturman Bangkok, Thailand |
| Emmanuel Fritsch Nantes, France | Ren Lu Wuhan, China | D. Brian Thompson Florence, Alabama |
| Eloïse Gaillou Paris, France | Thomas M. Moses New York, New York | Fanus Viljoen Johannesburg, South Africa |
| Al Gilbertson Carlsbad, California | Laura Otter Canberra, Australia | Wuyi Wang New York, New York |
| Gaston Giuliani Nancy, France | Aaron Palke Carlsbad, California | Christopher M. Welbourn Reading, UK |
| Lee A. Groat Vancouver, Canada | Ilene Reinitz Chicago, Illinois | Chunhui Zhou New York, New York |
| Yunbin Guan Pasadena, California | Nathan Renfro Carlsbad, California | J.C. (Hanco) Zwaan Leiden, The Netherlands |
| Peter Heaney University Park, Pennsylvania | Benjamin Rondeau Nantes, France | |
| Richard W. Hughes Bangkok, Thailand | George R. Rossman Pasadena, California |
SUBSCRIPTIONS
Copies of the current issue may be purchased for $29.95 plus shipping. Subscriptions are $79.99 for one year (4 issues) in the U.S. and $99.99 elsewhere. Canadian subscribers should add GST. Discounts are available for renewals, group subscriptions, GIA alumni, and current GIA students. To purchase print subscriptions, visit store.gia.edu or contact Customer Service. For institutional rates, contact Customer Service
DATABASE COVERAGE
Gems & Gemology’s impact factor is 0.767, according to the 2019 Thomson Reuters Journal Citation Reports (issued July 2020). 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:
| Academic Search Complete (EBSCO) | Current Abstracts | ProQuest/Cambridge Scientific Abstracts/CSA Illumina |
| AESIS (Australian Earth Sciences Information System) | Current Contents | Referativnyi Zhurnal |
| Applied Science & Technology Full Text/Abstracts/Index | GeoArchive | Russian Academy of Sciences Bibliographies |
| Biography Index | GEOBASE | Scopus/SciVerse (Elsevier) |
| Book Review Digest Plus | GeoRef | Speleological Abstracts |
| British Library Document Supply Centre (BLDSC) | Linda Hall Library of Science, Engineering, and Technology | TOC Premier (Table of Contents) |
| Chemical Abstracts | ingenta | Web of Science |
| CISTI (Canada Institute for Scientific and Technical Information) | Mineralogical Abstracts | Wilson Omni File: Full Text Mega Edition |
| Computers & Applied Sciences Complete | PASCAL (INIST) | Wilson Omni File: Full Text Select |
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 Managing Editor. Letters on articles published in G&G are also welcome. Please note that Field Reports, Lab Notes, Gem News International, Micro-World, and Charts, and Diamonds from the Deep 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 Managing Editor.
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.
EDITORIAL STAFF
| Editor-in-Chief Duncan Pay | Editors, Lab Notes Thomas M. Moses Shane F. McClure | Contributing Editors James E. Shigley Raquel Alonso-Perez |
| Managing Editor Stuart D. Overlin | Editors, Micro-World Nathan Renfro Elise A. Skalwold John I. Koivula | Editor-in-Chief Emeritus Alice S. Keller |
| Associate Editor Brooke Goedert | Editors, Gem News Emmanuel Fritsch Gagan Choudhary Christopher M. Breeding | Customer Service Martha Erickson (760) 603-4502 gandg@gia.edu |
| Technical Editors Tao Hsu Jennifer Stone-Sundberg | Assistant Editor Erin Hogarth |
PRODUCTION STAFF
| Creative Director Faizah Bhatti | Photographer Robert Weldon | Illustrator Russel Samson |
| Multimedia Associate Christopher Bonine | Photo/Video Producer Kevin Schumacher | |
| Video Production Larry Lavitt Pedro Padua Albert Salvato |
EDITORIAL REVIEW BOARD
| Ahmadjan Abduriyim Tokyo, Japan | Jaroslav Hyršl Prague, Czech Republic | Sudarat Saeseaw Bangkok, Thailand |
| Timothy Adams San Diego, California | Dorrit Jacob Canberra, Australia | Karl Schmetzer Petershausen, Germany |
| Edward W. Boehm Chattanooga, Tennessee | A.J.A. (Bram) Janse Perth, Australia | Andy Shen Wuhan, China |
| James E. Butler Washington, DC | Mary L. Johnson San Diego, California | Guanghai Shi Beijing, China |
| Alan T. Collins London, UK | Stefanos Karampelas Paris, France | James E. Shigley Carlsbad, California |
| Sally Eaton-Magaña Carlsbad, California | Lore Kiefert Lucerne, Switzerland | Elisabeth Strack Hamburg, Germany |
| John L. Emmett Brush Prairie, Washington | Simon Lawson Maidenhead, UK | Nicholas Sturman Bangkok, Thailand |
| Emmanuel Fritsch Nantes, France | Ren Lu Wuhan, China | D. Brian Thompson Florence, Alabama |
| Eloïse Gaillou Paris, France | Thomas M. Moses New York, New York | Fanus Viljoen Johannesburg, South Africa |
| Al Gilbertson Carlsbad, California | Laura Otter Canberra, Australia | Wuyi Wang New York, New York |
| Gaston Giuliani Nancy, France | Aaron Palke Carlsbad, California | Christopher M. Welbourn Reading, UK |
| Lee A. Groat Vancouver, Canada | Ilene Reinitz Chicago, Illinois | Chunhui Zhou New York, New York |
| Yunbin Guan Pasadena, California | Nathan Renfro Carlsbad, California | J.C. (Hanco) Zwaan Leiden, The Netherlands |
| Peter Heaney University Park, Pennsylvania | Benjamin Rondeau Nantes, France | |
| Richard W. Hughes Bangkok, Thailand | George R. Rossman Pasadena, California |
SUBSCRIPTIONS
Copies of the current issue may be purchased for $29.95 plus shipping. Subscriptions are $79.99 for one year (4 issues) in the U.S. and $99.99 elsewhere. Canadian subscribers should add GST. Discounts are available for renewals, group subscriptions, GIA alumni, and current GIA students. To purchase print subscriptions, visit store.gia.edu or contact Customer Service. For institutional rates, contact Customer Service
DATABASE COVERAGE
Gems & Gemology’s impact factor is 0.767, according to the 2019 Thomson Reuters Journal Citation Reports (issued July 2020). 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:
| Academic Search Complete (EBSCO) | Current Abstracts | ProQuest/Cambridge Scientific Abstracts/CSA Illumina |
| AESIS (Australian Earth Sciences Information System) | Current Contents | Referativnyi Zhurnal |
| Applied Science & Technology Full Text/Abstracts/Index | GeoArchive | Russian Academy of Sciences Bibliographies |
| Biography Index | GEOBASE | Scopus/SciVerse (Elsevier) |
| Book Review Digest Plus | GeoRef | Speleological Abstracts |
| British Library Document Supply Centre (BLDSC) | Linda Hall Library of Science, Engineering, and Technology | TOC Premier (Table of Contents) |
| Chemical Abstracts | ingenta | Web of Science |
| CISTI (Canada Institute for Scientific and Technical Information) | Mineralogical Abstracts | Wilson Omni File: Full Text Mega Edition |
| Computers & Applied Sciences Complete | PASCAL (INIST) | Wilson Omni File: Full Text Select |
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 Managing Editor. Letters on articles published in G&G are also welcome. Please note that Field Reports, Lab Notes, Gem News International, Micro-World, and Charts, and Diamonds from the Deep 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 Managing Editor.
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.