Article Search Results

Show Filters
Showing 8 results for "synthetic corrundum"

Types

Articles (8)

Content Type

Lab Notes (3) Abstract (2)

Reviewed

Topics

See All Topics

Topics

Identification (8)
Gemmology (5)
Synthetics (5)
Colour (4)
History (4)
Instrumentation (4)
Jewellery (4)
Localities (4)
Mining (4)
Technology (4)
Treatment process (4)
Geology (3)
Inclusions (3)
Optical Properties (3)
Synthesis Process (3)
Chemical Composition (2)
Fashion (2)
Folklore (2)
Grading (2)
Imitations (2)
Manufacturing (2)
Mineralogy (2)
Physical properties (2)
Techniques (2)
Tools (2)
Trade (2)
Assembled Stone (1)
Design (1)
Education (1)
Enhancement (1)
Formation (1)
Metals (1)
Optical effects (1)
Organics (1)
Precious Metals (1)
Pricing (1)

Gemstones

Pearl (8)
XClear Selections
G-G Spring 2015
Article
Spring 2015 G&G Examines Blue Spinel, Chinese Jewellery Design and the Latest in Synthetics

Russell Shor, June 12, 2015

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

Read More
A large group of people outside on GIA’s Carlsbad, California campus.
Article
Guardians of Trust: GIA’s Innovative Research, Instruments and Services

Russell Shor, September 20, 2019

GIA’s services and instruments have grown in importance and impact as new gem treatments and laboratory-grown gems have entered the market.

Read More
Summer G&G 2015
Article
Summer 2015 G&G: Dual-Stars, Photomicrography Guide, Rubies from Tajikistan, New Micro-World Section

Russell Shor, August 14, 2015

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

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
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
Abstracts; Autumn 1991

Dona M. Dirlam

This article, from the Autumn 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemology.

Read More
Loose natural pearl aggregates
Natural Pearl Aggregates from Pteria Molluscs

Sally Chan and Yixin (Jessie) Zhou, January 30, 2015

Ten loose pearls with interesting shapes and internal growth features were from Pteria-species molluscs.

Read More
Rough diamonds
Article
De Beers Reduces Rough Prices – Too Little?

Russell Shor, May 19, 2015

De Beers reduces rough prices at May sight, undisclosed treated diamonds submitted to GIA, and Sotheby’s and Christie’s sales break auction records − again.

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