Article Search Results

Types

Content Type

Reviewed

Topics

Gemstones

Clear Selections

 

(51) results

Cambodian-Thai Ruby
Four Pinctada maculata bead-cultured blister pearls
Rough and cut sapphires
Blue Sapphires
Sapphire
Synthetic Ruby Overgrowth on Natural Corundum
Unheated faceted and rough rubies weighing from 0.9 to 5.4 carats from Niassa
This 2.14 ct “Fancy red” oval-cut diamond was produced through a multi-step treatment process.
Natural malachite, like the analyzed material shown here, is well known for its bright green color and distinctive banded structure.

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