"Emerald and aquamarine have been known and cherished since Antiquity, but it is only in the last few centuries that science has realized that these two coveted gems are actually different varieties of the same mineral -- Beryl. Number 7 in the popular extraLapis English mineralogy monograph series, "Beryl: And Its Color Varieties" surveys the mineralogy and localities of this popular gemstone."
"From its earliest days as a territory when prospectors searched for gold and silver to the giant copper camps of the twentieth century to today when Tucson is a mecca for mineral collectors worldwide, the historical fabric of Arizona is woven with minerals. The book endeavors to provide a sense of the people, places, and times that spawned the state's mineral discoveries. It begins with a geologic overview, but the story is more a hist ..."