Article Search Results

Show Filters
Showing 2 results for "*"

Types

Articles (2)

Content Type

Reviewed

Peer Reviewed (2)

Topics

See All Topics

Topics

Gemmology (2)
History (2)
Localities (2)
Geology (1)
Inclusions (1)
Mining (1)

Gemstones

See All Gemstones

Gemstones

Iolite (2)
Garnet (1)
Moonstone (1)
Ruby (1)
Sapphire (1)
Spinel (1)
Topaz (1)
Tourmaline (1)
Zircon (1)
XClear Selections
A Prospectors’ Guide Map to the Gem Deposits of Sri Lanka

C. B. Dissanayake and M. S. Rupasinghe, September 1, 1993

Sri Lanka is world famous for its gem wealth, but the actual extent of the deposits has never been determined.

Read More
Sri Lanka: The Gem Island

Peter C. Zwaan, June 1, 1982

An overview of the many types of gem-quality material, and its inclusions, currently found in Sri Lanka.

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

By closing this banner or using this site you agree to our revised Privacy Notice, Terms of Service and Cookie Policy.