The author leads the reader on a treasure hunt for some of the most valuable, glamorous, and mysterious substances on earth. Journey from the underground opal churches of Outback Australia to the once pearl-rich rivers of Scotland; from the peridot mines on an Apache reservation in Arizona to the remote ruby mines in the mountains of northern Burma.
Amber -- Jet -- Pearl -- Opal -- Peridot -- Emerald -- Sapphire -- Ruby -- Diamond.