By Richard W. Hughes. Join the author as he pays a visit to the ruby and sapphire deposits of the lost island of Madagascar.

A journey to Russia's jade mines. By Richard Hughes, with Nickolai Kouznetsov.

Article by Jason Stephenson

A serendipitous discovery leads to a new source for paraiba tourmalines...

Moussa Konate, originally from Guinea in northwest Africa, has specialized in buying and selling rough gem materials in southeast Africa. From his original explorations in Madagascar, we will trace his steps to a small area in Mozambique, where a big discovery was unearthed.

By R.W. Hughes and Vincent Pardieu, with Guillaume Soubiraa and Dana Schorr. The insane gem posse hits the trail in search of the lost mines of Marco Polo, finding spinels, rubies, and something far more valuable.

The second-most valuable gem in the world Burmese Jade: The Inscrutable Gem. By R.W. Hughes, O. Galibert, G. Bosshart, F. Ward, Thet Oo, M. Smith, Tay Thye Sun and George Harlow.