Feature
Gems & Gemology, Summer 1989, Vol. 25, No. 2

Grading the Hope Diamond

Peer Reviewed Article
Robert Crowningshield
For the first time ever, the famous Hope diamond was graded by a widely recognized system. Although the 45.52-ct weight was confirmed, the GIA Gem Trade Laboratory graders found the clarity—recently reported as "apparently flawless”—to be VS1.  Color graded "fancy dark grayish blue,'' the Hope phosphoresces an exciting red to short-wave U. V. radiation.

Get the latest
Gems & Gemology

Summer 2017 Gems & Gemology
The quarterly journal of the Gemological Institute of America.
 
Download the
Summer 2017 issue

Learn More About Colored Diamonds

Why We Love
Explore colored diamonds history, research, quality factors, and more in the GIA Gem Encyclopedia.
 
Learn More

You Might Also Like

Find a Retailer
learn more
Shop the Campus Store
Learn More
Quality Assurance Benchmarks
Learn More
Gems & Gemology
G&G Fall 2017 Edition
Learn more