Editorial
Supporting the Researchers of Tomorrow
By Duncan Pay, Editor-in-Chief


An overview of the Fall 2014 issue of Gems & Gemology, as well as GIA’s efforts to promote gemological research.

Read More

Articles (4)

Organics
Organics

Observations on Pearls Reportedly from the Pinnidae Family (Pen Pearls)

By Nicholas Sturman, Artitaya Homkrajae, Areeya Manustrong, and Nanthaporn Somsa-ard , Oct 31

Examines the internal structure, chemical composition, and spectroscopic features of 22 pen pearls.

Read More
Optical Properties
Optical Properties

Pleochroism in Faceted Gems: An Introduction

By Richard W. Hughes , Oct 31

Describes the phenomenon of pleochroism and its complex effect on the appearance of colored stones.

Read More
Trade
Trade

Nephrite Jade from Guangxi Province, China

By Zuowei Yin, Cui Jiang, M. Santosh, Yiming Chen, Yi Bao, and Quanli Chen , Oct 31

Introduces the Chinese nephrite mine in Hechi and characterizes the “band” and dendritic patterns found in this material.

Read More
View All Articles In This Issue

Regular Features

Lab notes
Lab Notes

The latest advances and findings from GIA laboratories.

View All (8)
Gem News
Gem News International

Global coverage of gem sources, notable new gem materials, and recent industry developments.

View All (6)
Book Review
Book Reviews

Your guide to the latest gem and jewelry books and other media.

View All (6)
Abstract
Gemological Abstracts

Summaries of important gem and jewelry articles recently published elsewhere.

View All (3)

2014
G&G CHALLENGE WINNERS

Congratulations to the readers who earned a perfect score on this year's Challenge quiz.

Read More

You Might Also Like

Resources For Retailers
learn more
Shop the Campus Store
Learn More
Exhibit: Starry Night Sapphire
Learn More
G&G Fall 2014 Edition
Learn more