White gold was one of the clues in today's Geo Quiz.

It refers to the valuable cotton that's grown in the Eurasian country we're looking for.

It's one of the countries that figures prominently in a new book about the multi-billion dollar blue jean industry.

Rachel Louise Snyder is author of Fugitive Denim....She calls it "The Story of People and Pants in the Borderless World of Global Trade."

Ms. Snyder --- if its fair to say that you "follow the pants" (the blue jeans)....where in Eurasia do you begin tracking this story?

Listen to the interview

Azerbaijan -- the province of Bilasuvar where handpicked cotton "white gold" today sells for $1200 dollars a ton, one of the largest cotton producers in the world, with history of cotton farming that goes back to Soviet days.

Rachel Louise Snyder is the author "Fugitive Denim: "The Story of People and Pants in the Borderless World of Global Trade."