Other
Alexandrite Tsarstone Collectors Guide
Online guide for people interested in the history and valuation of alexandrite gemstones and jewelry.
Smithsonian Institution
National Museum of Natural History: The Allure of Pearls
Exhibition of some of the first known gems to early humans, this collection of pearls includes several world famous precious stones.
Smithsonian Institution
National Museum of Natural History: The Splendor of Diamonds
Describes past exhibition of some of the finest gems in the world, this collection of precious diamonds includes several rare and valuable stones.