Minerals And Gemstones : 300 Of The Earth's Natural Treasures

Discover the fascinating world of the treasures beneath your feet. Minerals and Gemstones is an accessible and informative reference guide to 300 different minerals and gemstones, from simple sandstones to sanidine, jade and diamond. Learn what the Earth is made of, how its rocks were formed and how minerals and gems are used today. Minerals and Gemstones is divided into sections covering the internationally recognised classification groups. Each entry includes an accurately reproduced and representative colour photograph, and a key information table including specifications such as the colour, lustre, streak, hardness, specific gravity, cleavage, habit and crystal system of each type of mineral and gemstone. Full of facts and with an engaging but expertly written text, this handy, pocket-size book is a valuable reference source as well as a fascinating read.