mineral

Green Fluorite

Calcium Fluoride (CaF2)

Hardness: 4 on Mohs scale; Color: Green (ranging from pale to deep teal); Luster: Vitreous (glass-like); Crystal structure: Cubic/Isometric; Cleavage: Perfect octahedral; Specific Gravity: 3.17-3.18

Hardness: 4 on Mohs scale
Color: Green (ranging from pale to deep teal)
Luster: Vitreous (glass-like)

Identified May 6, 2026More mineral →

Identify your own rocks.

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

App Store Google Play

Physical properties

Hardness: 4 on Mohs scale; Color: Green (ranging from pale to deep teal); Luster: Vitreous (glass-like); Crystal structure: Cubic/Isometric; Cleavage: Perfect octahedral; Specific Gravity: 3.17-3.18

Formation & geological history

Occurs as a hydrothermal vein mineral, often associated with metallic ores like lead and silver. It can be found in sedimentary rocks as a cementing material or in igneous pegmatites. It has been formed throughout various geological ages depending on local tectonic activity.

Uses & applications

Extensively used as a flux in steel making and aluminum smelting. High-purity specimens are used in lenses for microscopes and telescopes. It is highly valued as an ornamental stone for jewelry and metaphysical collections.

Geological facts

Fluorite is the most colorful mineral in the world, earning the nickname 'the most colorful mineral.' It was also the original source for the discovery of fluorescence, as many specimens glow under UV light.

Field identification & locations

Identified in the field by its distinctive cubic crystals, its relatively low hardness (can be scratched by a pocket knife), and its perfect four-directional cleavage. Commonly found in locations like Northern England, China, Mexico, and Illinois, USA.