Crystal and Gem (DK)(Pevná vazba)

From the rarest crystal to the most common stone, gems from around the world are revealed in dazzling detail in this illustrated guide. Become an eyewitness to the many different varieties of crystals and gems in this picture-led reference guide that will take you on a visual tour of the world of precious stones. Children will be mesmerised by the many uses of rocks like quartz and understanding crystals - from dazzling jewellery to diamond cutting tools and the silicon chip in their phone.This illustrated guide for kids aged 9+ reveals what exactly crystals and gems are, how they''re formed, how to identify them, and how they can be used in everything from microchips to jewellery making.Throughout the pages of this newly-revised book on precious stones, you can expect to find: - A fresh new look; new photographs, updated information, and a new "eyewitness" feature.- Amazing facts, updated diagrams, statistics, and timelines.- Brand new eyewitness accounts from experts in the field.Eyewitness Crystal & Gem features striking full-colour photographs of beautiful stones, including pearl and shell, jet and amber, quartz crystals, precious metals gemstones and much more! In this guide, curious children can find the answers to questions like, how can a rough diamond become a show-stopping centrepiece? Where does labradorite get its colours? Why are there quartz crystals in clocks and watches? How can crystals be grown in a laboratory? So, what''s new? Part of DK''s best-selling Eye
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