Languages
Pages
Legal
Explore all categories to find your favorite topic
pg. 149 EDITORIAL REGULAR FEATURES pg. 115 96 FEATURE ARTICLES Based on recent visits to the pearl farms of Hanzhou Province, the authors report on the latest techniques…
Gems&Gernology VOLUME XIX SPRING 1983 The quarterly journal of the Gemological Institute of America SPRING 1983 Volume 19 Number 1 TABLE OF CONTENTS EDITORIAL 1 The Gems…
pg. 74EDITORIALREGULAR FEATURESpg. 434FEATURE ARTICLESA comprehensive report on the history, occurrence, and properties of thisvividly iridescent gem material, which is mined…
Summer 1987 Gems & GemologySUMMER 1987 Volume 2 3 Number 2 TABLE OF CONTENTS 78 The Occurrence and Gemological Properties of Wessels Mine Sugilite James E. Shigley, John
T A B L E O F C O N T E N T S ABOUT THE COVER: Geophysics has the potential to play an increasingly important role in gemstone exploration. Advances in geophysical technology…
GEM~&GEMOLOGY SPRING 1992 m VOLUME 28 No. 1 T A B L E O F C O N T E N T S EDITORIAL 1 The Gems d Gemology Most Valuable Article Award Alice S. Keller ARTICLES 4 Gem-Quality…
Gems&Gemology - -- VOLUME XVIII FALL 1982 The quarterly journal of the Gemological Institute of America FALL 1982 Volume 18 Number 3 CONTENTS FEATURE ARTICLES NOTES AND…
SPRING 1982 Volume 18 Number 1 TABLE OF CONTENTS EDITORIAL 1 The Gems & Gemology Most Valuable Article Award Richard T. Lid~licoat, Ir. FEATURE 3 The Jade Enigma ARTICLES…
5TH INTERNATIONAL GEMOLOGICAL SYMPOSIUM GEMS GEMOLOGY SUMMER 2011 129 DIAMOND IDENTIFICATION LENGTH-TO-WIDTH RATIOS AMONG FANCY SHAPE DIAMONDS Troy Blodgett tblodgett@giaedu¹…
THE QUARTERLY JOURNAL OF THE GEMOLOGICAL INSTITUTE OF AMERICA F A LL 2008 P A G ES 201–294 V O LU M E 44 N O 3 VOLUME XLIV FALL 2008 G EM S G EM O LO G Y Identifying Synthetic…
VOLUME XXl l l I SPRING 1987 The quarterly journal of the Gemological Institute of America EDITORIAL STAFF Editor-in-Chief Richard T Liddicoat, Jr. Associate Editors Peter…
EDITORIAL 79 Support Your Local Researcher Alice S. Keller FEATURE ARTICLE 80 Separating Natural and Synthetic Rubies on the Basis of Trace-Element Chemistry Sam Muhlmeister,…
134 LAB NOTES GEMS & GEMOLOGY SUMMER 2009 DIAMOND Bicolored Diamond GIA only rarely encounters faceted diamonds that merit two color grades because of the presence of…
79 EDITORIAL T A B L E O F C O N T E N T S CCaarrllssbbaadd:: AA NNeeww HHoommee ffoorr GGIIAA aanndd GGeemmss GGeemmoollooggyy Alice S. Keller FEATURE ARTICLES 80 UUppddaattee…
GEM NEWS INTERNATIONAL GEMS GEMOLOGY SUMMER 2010 147 DIAMONDS Unusual facet arrangement produces scalloped appear- ance in diamond. Facet arrangement can have an impor- tant…
pg. 217 VOLUME 36 NO. 3 189 New Diamond Treatments: What Do They Mean for the Gemological Laboratory? William E. Boyajian EDITORIAL 192 GE POL Diamonds: Before and After…
VOLUME X X X u SPRING 1994 ' A T A B L E 0 F C O N T E N T S EDITORIAL The Gems d Gemology Most Valuable Article Award Alice S. Keller FEAW ARTICLES The Anahi Ametrine Mine,…
- , I . . - VOLUME XVll SPRING 1981 \ .: I SPRING 1981 Volume 17 Number I TABLE OF CONTENTS EDITORIAL FEATURE ARTICLES NOTES AND NEW TECHNIQUES REGULAR FEATURES 1 An Introduction…
i EDITORIAL The 1999 International Gemological Symposium: What a Ride! 1 Alice Keller and Kathryn Kimmel VALEDICTORY ADDRESSES Globalization and Technology: Dynamic Forces…
380 Technologies of the 1990s GEMS & GEMOLOGY Winter 2000 ABOUT THE AUTHOR Dr. Johnson ([email protected]) is manager of research and development at the GIA Gem Trade…