Current Issue

Fall 2009, Volume 45, Issue 3

EDITORIAL

New Technologies Face Off with New Realities

FEATURE ARTICLES

Characterization of “Green Amber” with Infrared and Nuclear Magnetic Resonance Spectroscopy
Ahmadjan Abduriyim, Hideaki Kimura, Yukihiro Yokoyama, Hiroyuki Nakazono, Masao Wakatsuki, Tadashi Shimizu, Masataka Tansho, and Shinobu Ohki

A Crystallographic Analysis of the Tavernier Blue Diamond
Scott D. Sucher

NOTES AND NEW TECHNIQUES

“Fluorescence Cage”: Visual Identification of HPHT-Treated Type I Diamonds
Inga A. Dobrinets and Alexander M. Zaitsev

Update on Ammolite Production from Southern Alberta, Canada
Keith A. Mychaluk

RAPID COMMUNICATIONS

Polymer-Filled Aquamarine
Li Jianjun, Sun Yuan, Hao Wangjiao, Luo Han, Cheng Youfa, Liu Huafeng, Liu Ying, Ye Hong, and Fan Chengxing

Gem-Quality Yellow-Green Haüyne from Oldoinyo Lengai Volcano, Northern Tanzania
Anatoly N. Zaitsev, Olga A. Zaitseva, Alexander K. Buyko, Jörg Keller, Jurgis Klaudius, and Andrei A. Zolotarev

REGULAR FEATURES
Lab Notes (Featuring: A Useful Technique to Identify Negative Crystals in Ruby)
Gem News International (Featuring: Preliminary Observations on New Rubies from Mozambique)
2009 Challenge Winners
Book Reviews
Gemological Abstracts

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