From the category archives:

Gem Identification

Colored Stone Cuts

by gesner12 on June 11, 2013

Gemstone Color Enhancements

by gesner12 on June 11, 2013

History of the La Peregrina Pearl

by gesner12 on December 15, 2011

Freshwater Pearls

by gesner12 on December 9, 2011

History of David Webb

by gesner12 on November 16, 2011

History of Seaman Schepps

by gesner12 on November 10, 2011

The History of Birthstones

by gesner12 on November 3, 2011

Imperial Easter Eggs/Peter Carl Faberge

by gesner12 on November 2, 2011

Demantoid Garnet

by gesner12 on November 2, 2011