"Explore the beauty and history of turquoise, one of the most celebrated and treasured gemstones of ancient and modern times. Revered around the world, turquoise is a mineral with two histories: that of its formation and that of the people who have mined, traded, and treasured it. Turquoise is an icon of ancient civilizations and especially of the desert regions where it most famously appears. Uncover the history and the secrets of this coveted gemstone in Turquoise. Written by Dan R. Lynch with Bob Lynch, the authors of several books about rocks and minerals, this is the definitive guide to the sky-blue stone"-- Provided by publisher.