Article Search Results

Show Filters
Showing 9 results for "*"

Types

Articles (9)

Content Type

Lab Notes (2) Abstract (2) Feature (1)

Reviewed

Peer Reviewed (3)

Topics

See All Topics

Topics

Physical properties (9)
Localities (5)
Identification (4)
Inclusions (4)
Organics (4)
Chemical Composition (3)
Gemmology (3)
Mining (3)
Optical Properties (3)
Synthetics (3)
Techniques (3)
Treatment process (3)
Colour (2)
History (2)
Instrumentation (2)
Jewellery (2)
Mineralogy (2)
Precious Metals (2)
Synthesis Process (2)
Technology (2)
Tools (2)
Trade (2)
Assembled Stone (1)
Care (1)
Crystal structure (1)
Design (1)
Education (1)
Enhancement (1)
Folklore (1)
Geology (1)
Grading (1)
Manufacturing (1)
Material properties (1)
Optical effects (1)

Gemstones

Pearl (9)
XClear Selections
Bracelet containing akoya cultured pearls from Australia
Akoya Cultured Pearl Farming in Eastern Australia

Laura M. Otter, Oluwatoosin B. A. Agbaje, Le Thi-Thu Huong, Tobias Häger, and Dorrit E. Jacob, January 26, 2018

Characterises the akoya cultured pearls produced on the eastern shoreline of Australia using native Pinctada imbricata fucata molluscs.

Read More
Three pieces of labradorite with yellow, blue and green flashes of color.
Article
Optical Effects of Phenomenal Cabochons

Sharon Bohannon, November 11, 2016

Learn how the structure, inclusions and properties of some gemstones interact with light to create unusual visual effects.

Read More
G&G Brief presents an overview of the content of the Fall 2015 issue of Gems & Gemology.
Article
Autumn 2015 G&G: Trapiche Emeralds, Synthetic Diamonds and a Large Diamond Source

Russell Shor, November 4, 2015

G&G Brief presents an overview of the content of the Autumn 2015 issue of Gems & Gemology.

Read More
Non-nacreous Pen Pearls
Observations on Pearls Reportedly from the Pinnidae Family (Pen Pearls)

Nicholas Sturman, Artitaya Homkrajae, Areeya Manustrong, and Nanthaporn Somsa-ard, October 31, 2014

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

Read More
151456
Atypical Freshwater Cultured Pearls with Damaged Nacre

Chunhui Zhou, GIA, July 2, 2013

The New York lab received four baroque-shaped pearls with damaged nacre layers

Read More
Confusing, Triangular Inclusions in an Art Deco-Style Pin
Spring 1991 G&G Lab Notes

March 1, 1991

This section, from the Spring 1991 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.

Read More
Gemstone Durability: Design to Display

Deborah Dupont Martin, June 1, 1987

A treatise on the design, display, care and repair of fine gemstones.

Read More
Abstract Header from the 2009 issue of Gems & Gemology
Abstracts; Autumn 2009

Brendan M. Laurs, Thomas W. Overton

This article, from the Autumn 2009 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemology.

Read More
Abstract Header from the 2009 issue of Gems & Gemology
Abstracts; Winter 2009

Brendan M. Laurs, Thomas W. Overton

This article, from the Winter 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.

Read More

Resources For Retailers
Find a Retailer
learn more
Shop the Campus Store
Visit the campus shop
Learn More
Abstract art with a fluorescent rainbow and dark brown triangle patterns
Subscribe to Knowledge Rocks Emails
Learn More
The internal structures of natural pearls from the marine mollusk Pinctada maxima are the subject of the lead article in this issue. The scattered loose pearls on the cover are from Paspaley’s natural pearl collection, which includes one discovered in the 1970s at the Eighty Mile Beach fishing grounds
G&G Spring 2021 Edition
Learn more