Gem: The Definitive Visual Guide is a comprehensive book that provides readers with an in-depth exploration of the world of gemstones. It covers everything from the science of gems and their formation to their cultural significance and uses throughout history.

Rocks & Minerals: The Definitive Visual Guide is an exceptional resource for anyone interested in exploring the fascinating world of geology. This comprehensive book provides a rich and visually stunning overview of rocks and minerals, combining informative text with captivating images. Whether you are a beginner or an experienced enthusiast, you will find this guide to be a valuable tool for identifying, understanding, and appreciating various geological formations.