"100 fun facts about rocks, minerals, gems, and all things shiny"--

"Investigate Gems introduces readers to what gems are and how they form, including mineral gems and organic gems. Learn about crystal systems, imitation and synthetic gems, cultured pearls, how gems are used, and their historic importance. A geology-themed project provides the opportunity for hands-on experience. Other features include a table of contents, fun facts, infographics, sidebars, map, and an index. Aligned to Common Core Standards and correlated...

This title explains what organic gems are, how and where they form in nature, and why they are set apart from inorganic gemstones.

"Descubre las maravillas que esconde la Tierra y aprende todo lo que siempre quisiste saber sobre rocas, gemas fósiles y conchas. ¿Qué roca es tan ligera que flota? ¿Cómo se forman los cristales? ¿Cuál es el mejor lugar del mundo para buscar fósiles? ¿Qué es una perla? Con más de mil imágenes inreíbles y cientos de datos facinantes, El libro de las rocas y los minerales es una guía indespensable sobre los más extraordinarios tesoros...

"Gemstones are more than just pretty rocks. These stones serve a purpose far beyond jewelry or decoration! In this book, beautiful photos and interesting text combine to create a fascinating glimpse into the world of gemstones. Many special features turn this into a stand-out introduction to the subject, including a gemstone profile, comparison features, a formation diagram, and an activity. The text, photos, and features combine to create an engaging...