Interactive 3D models, plain-English explanations, and real gemstone examples. From crystal systems to optical properties — learn how gems work.
Each module covers a core gemology topic with interactive 3D models and plain-English explanations. No sign-up required.
Explore the seven crystal systems with interactive 3D lattice models. See how atoms arrange themselves in cubic, hexagonal, and other structures.
● Available now ⚛️Understand how elements combine to form gemstones. Interactive Bohr atomic models, bonding visualisations, and gemstone-specific chemistry.
● Available now 🌈Discover how light interacts with gemstones. Refraction, dispersion, pleochroism, and the physics behind gem colour and brilliance.
● Available now 💎Hardness, specific gravity, cleavage, and fracture. The hands-on properties gemologists use every day to identify stones.
● Available now 🔬Explore the microscopic world inside gemstones. Solid, liquid, and multiphase inclusions — and how they reveal a stone's natural origin.
● Available nowLearn to identify gemstones using a refractometer, spectroscope, and other tools. Includes interactive instrument simulators.
◐ Coming soonBrowse individual gemstone species — sapphire, ruby, emerald, spinel, and more. Properties, origins, and identification tips.
◐ Coming soon