Gemstones...

Explore gemstones, minerals, and crystals through a structured reference. Gemstones Guide helps you discover gemstones, crystals, and mineral stones through an organized offline reference. Learn about gemstone characteristics, mineral properties, and visual details for hundreds of stones commonly used in jewelry and geology. The app provides structured gemstone information designed for collectors, students, jewelers, and anyone interested in minerals and crystals. Gemstone Profiles • Explore many gemstones and minerals • Learn stone names and classifications • Discover physical and optical properties • Understand gemstone characteristics Stone Information • Hardness values and mineral properties • Color variations and crystal structures • Chemical composition • Optical characteristics used in gemology Stone Categories • Precious gemstones such as diamond, ruby, sapphire, and emerald • Semi-precious gemstones including amethyst, citrine, garnet, and opal • Organic gemstones such as amber and pearl • Synthetic and laboratory-created gemstones Images and Visual Learning • High-quality gemstone images • Visual references for easier identification • Clear presentation of stone appearance Search and Filters • Search gemstones quickly • Filter stones by color • Filter by hardness or chemical composition • Explore stones through organized categories Learning Tools • Educational facts about gemstones • Quiz mode to test gemology knowledge • Glossary explaining gemstone terminology Favorites • Save gemstones for quick reference • Review stones you want to study Designed for Easy Exploration • Clean and simple interface • Fast navigation through gemstone entries • Works fully offline Premium Features Upgrade for additional benefits: • Ad-free experience • Improved browsing convenience • Additional content updates Privacy Focused • No unnecessary permissions • No personal data collection • Information remains on your device Who This App Is For • Gemstone collectors • Jewelry enthusiasts • Geology and gemology students • Anyone interested in minerals and crystals Gemstones Guide helps you explore stones, understand gemstone properties, and learn about minerals used in jewelry and geology. Download Gemstones Guide to explore gemstones and minerals. LICENSED APPLICATION END USER LICENSE AGREEMENT: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/