Origin Determination of Dolomite-Related White Nephrite through Iterative-Binary Linear Discriminant Analysis
A technique for origin identification based on statistical analysis and LA-ICP-MS spectrometry.
Japanese Jadeite: History, Characteristics and Comparison with Other Sources
Examines the sources, colour, texture and chemical composition of jadeite from Japanese deposits.
Abstracts; Summer 2009
This article, from the Summer 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
A Survey of the Gemstone Resources of China
China has identified many deposits with significant potential to produce gemstones; various species are discussed.
Some Observations on the Treatment of Lavender Jadeite
This article discusses the results of an experiment conducted on heat-treated lavender jadeite.
Gemmological characteristics of coated jadeite jade
Analyses the effects of coating on green jadeite specimens using DiamondView imaging, microscopy, spectroscopy and Raman spectrophotometry.
New or Unusual Gem Materials Encountered in the Institute’s Gem Trade Laboratories
One of the favourites for Gems & Gemology readers is the Lab Notes column, the brief reports in each issue describing notable or unusual gem materials that have made their way to GIA’s laboratory.
Nephrite Jade from Guangxi Province, China
Introduces the Chinese nephrite mine in Hechi and characterises the “band” and dendritic patterns found in this material.
Gemstone Carving in China: Winds of Change
Chinese master carvers have produced some of the world's most sophisticated gemstone carvings.
Identification of Bleached and Polymer-Impregnated Jadeite
Article, Identification, Jadeite, “Bleaching”, Polymer Impregnation, Jade Treatments