Learn Gemmology

FGA curriculum-aligned content covering crystallography, physical and optical properties, inclusions, treatments, and synthetics.

Crystal Systems

The seven crystal systems and their characteristic symmetry elements.

Physical Properties

Hardness, specific gravity, cleavage, fracture, and lustre.

Optical Properties

Refractive index, birefringence, pleochroism, and dispersion.

Inclusions

Diagnostic inclusions and fingerprinting for gem identification.

Treatments

Heat treatment, filling, coating, and treatment detection.

Synthetics

Flame fusion, hydrothermal, flux growth, and synthetic detection.

FGA Curriculum Alignment

This content is aligned with the Gem-A (Gemmological Association of Great Britain) FGA diploma curriculum. While comprehensive, this resource is not a substitute for formal gemmological education and hands-on training with reference stones.