Rock Identifier
Color-change garnet (likely alexandrite-like garnet) (Likely pyrope–spessartine garnet; exact species cannot be confirmed from the image) — gemstone
gemstone

Color-change garnet (likely alexandrite-like garnet)

Likely pyrope–spessartine garnet; exact species cannot be confirmed from the image

AI-generated identification · may be incorrect

A faceted, dark green-to-purple stone set in metal. Garnets are typically Mohs 6.5–7.5, vitreous, and cubic; the pictured lighting is insufficient to establish composition or color-change behavior.

Color
change behavior
Identified More gemstone →
Explore Color-change garnet (likely alexandrite-like garnet) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

Physical properties

A faceted, dark green-to-purple stone set in metal. Garnets are typically Mohs 6.5–7.5, vitreous, and cubic; the pictured lighting is insufficient to establish composition or color-change behavior.

Formation & geological history

Garnets form in metamorphic rocks and, less commonly, igneous rocks; their age depends on the host deposit. The stone’s geological age and origin cannot be determined visually.

Uses & applications

Used in jewelry and as collectible gemstones; garnet is also used industrially as an abrasive and filtration medium.

Geological facts

Some garnets show color change under different lighting, but this photograph alone cannot verify that property.

Field identification & locations

A gemological test—especially refractive index, spectroscopy, and examination under daylight and incandescent light—is needed for identification. Garnets occur worldwide, including India, Sri Lanka, Madagascar, and the United States.