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Vn1 I I M F Y Y i l G P R l N r 1QRA CHINA The quarterly journal ot the Lernologlcal Institute ot Amertca SPRING 1986 Volume 2 2 Number 1 TABLE OF CONTENTS EDITORIALS 1 China…
T A B L E 0 F C O N T E N T S EDITORIAL Diamond Prospecting and Market Prospects Richard T. Liddicoat FEATURE ARTICLES A History of Diamond Sources in Africa: Part I A. /.…
EDITORIAL 243 The Impact of Fluorescence in Diamonds: A Different Research Perspective William E. Boyajian FEATURE ARTICLES 244 A Contribution to Understanding the Effect…
Mohsen Manutchehr-Danai Dictionary of Gems and Gemology 2nd extended and revised edition With approx. 25 000 entries, 1 500 figures and 42 tables Dictionary of Gems and Gemology…
pg 319 pg 308 VOLUME 38 NO 4Winter 2002 291 294 301 310 326 340 348 370 372 379 REGULAR FEATURES _______________________________ Gem Trade Lab Notes • “Piranha” agate…
pg. 74EDITORIALREGULAR FEATURESpg. 434FEATURE ARTICLESA comprehensive report on the history, occurrence, and properties of thisvividly iridescent gem material, which is mined…
The Sisk Gemology reference by Jerry Sisk I T h e S i s k G e m o l o g y R e f e r e n c e V O L U M E 1 / P R O M I N E N T G E M S Jerry Sisk’s pursuit of gemstones…
Distinguishing Natural Diamonds from Synthetic Diamonds and Diamond Simulants Knowing the Difference Natural diamonds have long fascinated mankind with their unique physical…
ambia is one of the world’s most significant sources of fine-quality emerald and has been called the second most important producer by value after Colombia (see, e.g.,…
GEMOLOGY 32 InColor ׀ Spring 2015 www.gemstone.org GEMOLOGY 33 InColor ׀ Spring 2015www.gemstone.org Introduction Only one in 10,000 natural diamonds has enough color to…
7/28/2019 Gemstone Gemology 1/52Gemology - HYMNS OF MERCURY1) OM BRAAM BREEM BRAUM SAH BUDDHAI NAMAH2) OM HVAM HLEEM BUM GREHANAATH BUDDHAI NAMAH3) OM BUDDHAI NAMAHTopaz:…
T A B L EDITORIAL C O N T E N T S Russia Reemerges as a Gen~stone Giant Richard T, Liddicoat FEATURE ARTICLE History of Pearling in La Paz Bay, South Baja California Micheline…
pg 74 EDITORIAL REGULAR FEATURES pg 43 4 FEATURE ARTICLES A comprehensive report on the history occurrence and properties of this vividly iridescent gem material which is…
2 DEMANTOID AND TOPAZOLITE FROM MADAGASCAR GEMS GEMOLOGY SPRING 2011 See end of article for About the Authors and Acknowledgments GEMS GEMOLOGY Vol 47 No 1 pp 2–14 © 2011…
188 Tairus Hydrothermal Synthetic Sapphires GEMS GEMOLOGY Fall 1997 ABOUT THE AUTHORS Dr Thomas is a senior researcher and Mr Maltsev is a technological researcher at Tairus…
A Pleochroic Variety of Gem Labradorite From the Rabbit Hills Area, Lake County, Oregon* By ERNEST H. CARLSON Associate Professor of Geology Kent State University Introduction…
deposit of Cu-bearing tourmaline, and the “neon” blue and green shown by the finest stones closely resembles the most sought-after material from Paraíba (figure 1).…
Identification of the Negative d Plane in Natural Ruby By Christopher P, Smith Growth-struct~~re analysis has become increasingly important as a gemological tool for locality…
pg. 307 VOLUME 40, NO. 4Winter 2004 283 285 314 288 303 323 334 359 362 369 376 REGULAR FEATURES _____________________ Lab Notes Faceted apophyllite with “crop circles”…
HYDROTHERMAL SYNTHETIC RED BERYL FROM THE INSTITUTE OF CRYSTALLOGRAPHY, MOSCOW 42 SYNTHETIC RED BERYL GEMS & GEMOLOGY SPRING 2001 both natural and synthetic, plus Ti,…