註釋
Engaging and entertaining reference guide about crystals and gems - perfect for younger readers. From the rarest crystal to more common gems Eyewitness Crystal & Gem explores the many stunning crystals, profiling how they formed, where to find them and follows their path to being set in jewellery. Eyewitness Crystal & Gem also includes a giant fold-out wall chart full of facts, perfect for bedrooms or classrooms. Packed with all the essential information from the previous edition Eyewitness Crystal & Gem is now more interactive and colourful than ever with new infographics, statistics, facts and timelines making the book more engaging and educational for your child.