EDITORIAL STAFF
| Editor-in-Chief Duncan Pay | Technical Editors Tao Hsu Jennifer Stone-Sundberg | Editorial Assistant Erin Hogarth |
| Managing Editor Stuart D. Overlin | Editors, Lab Notes Thomas M. Moses Shane F. McClure | Contributing Editors James E. Shigley Raquel Alonso-Perez Donna Beaton |
| Editor Jennifer-Lynn Archuleta | 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 1(760) 603-4502 gandg@gia.edu |
PRODUCTION STAFF
| Creative Director Faizah Bhatti | Photographer Robert Weldon | Illustrator Russel Samson |
| Production and Multimedia Specialist Juan Zanahuria | Photo/Video Producer Kevin Schumacher | |
| Multimedia Associate Christopher Bonine | Video Production Larry Lavitt Pedro Padua Nancy Powers Albert Salvato Betsy Winans |
EDITORIAL REVIEW BOARD
| Ahmadjan Abduriyim Tokyo, Japan | A.J.A. (Bram) Janse Perth, Australia | Benjamin Rondeau Nantes, France |
| Timothy Adams San Diego, California | E. Alan Jobbins Caterham, UK | George R. Rossman Pasadena, California |
| Edward W. Boehm Chattanooga, Tennessee | Mary L. Johnson San Diego, California | Andy Shen Wuhan, China |
| James E. Butler Washington, DC | Anthony R. Kampf Los Angeles, California | Guanghai Shi Beijing, China |
| Alan T. Collins London, UK | Robert E. Kane Helena, Montana | James E. Shigley Carlsbad, California |
| John L. Emmett Brush Prairie, Washington | Stefanos Karampelas Manama, Bahrain | Elisabeth Strack Hamburg, Germany |
| Emmanuel Fritsch Nantes, France | Lore Kiefert Lucerne, Switzerland | Nicholas Sturman Bangkok, Thailand |
| Eloïse Gaillou Paris, France | 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 |
| Jaroslav Hyršl Prague, Czech Republic | Aaron Palke Carlsbad, California | Christopher M. Welbourn Reading, UK |
| Dorrit Jacob Sydney, Australia | Nathan Renfro Carlsbad, California | J.C. (Hanco) Zwaan Leiden, The Netherlands |
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 1.844, according to the 2017 Thomson Reuters Journal Citation Reports (issued July 2018). 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 | Technical Editors Tao Hsu Jennifer Stone-Sundberg | Editorial Assistant Erin Hogarth |
| Managing Editor Stuart D. Overlin | Editors, Lab Notes Thomas M. Moses Shane F. McClure | Contributing Editors James E. Shigley Raquel Alonso-Perez Donna Beaton |
| Editor Jennifer-Lynn Archuleta | 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 1(760) 603-4502 gandg@gia.edu |
PRODUCTION STAFF
| Creative Director Faizah Bhatti | Photographer Robert Weldon | Illustrator Russel Samson |
| Production and Multimedia Specialist Juan Zanahuria | Photo/Video Producer Kevin Schumacher | |
| Multimedia Associate Christopher Bonine | Video Production Larry Lavitt Pedro Padua Nancy Powers Albert Salvato Betsy Winans |
EDITORIAL REVIEW BOARD
| Ahmadjan Abduriyim Tokyo, Japan | A.J.A. (Bram) Janse Perth, Australia | Benjamin Rondeau Nantes, France |
| Timothy Adams San Diego, California | E. Alan Jobbins Caterham, UK | George R. Rossman Pasadena, California |
| Edward W. Boehm Chattanooga, Tennessee | Mary L. Johnson San Diego, California | Andy Shen Wuhan, China |
| James E. Butler Washington, DC | Anthony R. Kampf Los Angeles, California | Guanghai Shi Beijing, China |
| Alan T. Collins London, UK | Robert E. Kane Helena, Montana | James E. Shigley Carlsbad, California |
| John L. Emmett Brush Prairie, Washington | Stefanos Karampelas Manama, Bahrain | Elisabeth Strack Hamburg, Germany |
| Emmanuel Fritsch Nantes, France | Lore Kiefert Lucerne, Switzerland | Nicholas Sturman Bangkok, Thailand |
| Eloïse Gaillou Paris, France | 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 |
| Jaroslav Hyršl Prague, Czech Republic | Aaron Palke Carlsbad, California | Christopher M. Welbourn Reading, UK |
| Dorrit Jacob Sydney, Australia | Nathan Renfro Carlsbad, California | J.C. (Hanco) Zwaan Leiden, The Netherlands |
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 1.844, according to the 2017 Thomson Reuters Journal Citation Reports (issued July 2018). 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.