Cally Oldershaw

• Firefly guide to gems
• Gemstones
• Gems of the World
• Guía de Las Piedras Preciosas
• Atlas of Geology and Landforms
• Deserts And Wastelands (Closer Look at)
• Gemstones
• Gemstones
• Gemstones
• Oceans
• Oceans (Our Planet)
• Philip's Guide to Gems, Stones and Crystals