Amethyst Mining in Brazil

JOURNAL ARTICLE published 1 January 1988 in Gems & Gemology

Authors: David Stanley Epstein

Tugtupite: A Gemstone from Greenland

JOURNAL ARTICLE published 1 July 1982 in Gems & Gemology

Authors: Aage Jensen | Ole V. Petersen

Gem News International

JOURNAL ARTICLE published 1 September 2003 in Gems & Gemology

Never Stop Innovating: Gem Artist Chi Huynh

JOURNAL ARTICLE published 1 February 2023 in Gems & Gemology

Authors: Tao Hsu | Artitaya Homkrajae | Kevin Schumacher

Jeremejevite: A Gemological Update

JOURNAL ARTICLE published 1 September 2001 in Gems & Gemology

Authors: Kenneth Scarratt | Donna Beaton | Garry DuToit

A Study of the General Electric Synthetic Jadeite

JOURNAL ARTICLE published 1 April 1987 in Gems & Gemology

Authors: Kurt Nassau | James E. Shigley

Gem Trade Lab Notes

JOURNAL ARTICLE published 1 April 1985 in Gems & Gemology

New Technologies of the 1980s: Their Impact in Gemology

JOURNAL ARTICLE published 1 April 1990 in Gems & Gemology

Authors: Emmanuel Fritsch | George R. Rossman

Opal from Querétaro, Mexico: Occurrence and Inclusions

JOURNAL ARTICLE published 1 July 1983 in Gems & Gemology

Authors: John I. Koivula | Chuck Fryer | Peter C. Keller

A Proposed New Classification for Gem-Quality Garnets

JOURNAL ARTICLE published 1 January 1985 in Gems & Gemology

Authors: Carol M. Stockton | D. Vincent Manson

Geology and Development of the Lomonsov Diamond Deposit, Northwestern Russia

JOURNAL ARTICLE published 1 August 2017 in Gems & Gemology

Authors: Karen V. Smith | Russell Shor

Detecting HPHT Synthetic Diamond Using a Handheld Magnet

JOURNAL ARTICLE published 1 January 2012 in Gems & Gemology

Authors: Kirk Feral

A Foundation for Grading the Overall Cut Quality of Round Brilliant Cut Diamonds

JOURNAL ARTICLE published 1 September 2004 in Gems & Gemology

Authors: Thomas M. Moses | Mary L. Johnson | Barak Green | Troy Blodgett | Kim Cino | Ron H. Geurts | Al M. Gilbertson | T. Scott Hemphill | John M. King | Lisa Kornylak | Ilene M. Reinitz | James E. Shigley

Experimental CVD Synthetic Diamonds from LIMHP-CNRS, France

JOURNAL ARTICLE published 1 September 2005 in Gems & Gemology

Authors: Wuyi Wang | Alexandre Tallaire | Matthew S. Hall | Thomas M. Moses | Jocelyn Achard | Ricardo S. Sussman | Alix Gicquel

Gray-to-Blue-to-Violet Hydrogen-Rich Diamonds from The Argyle Mine, Australia

JOURNAL ARTICLE published 1 April 2009 in Gems & Gemology

Authors: Carolyn H. van der Bogert | Christopher P. Smith | Thomas Hainschwang | Shane F. McClure

Latest-Generation CVD-Grown Synthetic Diamonds From Apollo Diamond Inc.

JOURNAL ARTICLE published 1 January 2007 in Gems & Gemology

Authors: Wuyi Wang | Matthew S. Hall | Kyaw Soe Moe | Joshua Tower | Thomas M. Moses

Tourmaline as an Inclusion in Zambian Emeralds

JOURNAL ARTICLE published 1 January 1982 in Gems & Gemology

Authors: John I. Koivula

A Preliminary Gemological Study of Synthetic Diamond Thin Films

JOURNAL ARTICLE published 1 June 1989 in Gems & Gemology

Authors: Emmanuel Fritsch | Laurie Conner | John I. Koivula

The Ultimate Synthetic: A Jewelry-Quality Diamond

JOURNAL ARTICLE published 1 January 1986 in Gems & Gemology

Authors: Richard T. Liddicoat

Colombian Trapiche Emeralds: Recent Advances in Understanding Their Formation

JOURNAL ARTICLE published 1 November 2015 in Gems & Gemology

Authors: Isabella Pignatelli | Gaston Guiliani | Daniel Ohnenstetter | Giovanna Agrosi | Sandrine Mathieu | Christophe Morlot | Yannick Branquet