mineral

Green Fluorite (Polished Egg)

Fluorite (Calcium Fluoride, CaF₂)

AI-generated identification · may be incorrect

Hardness: 4 on Mohs scale; Color: emerald to mint green, clear, and pale translucent bands; Luster: vitreous; Crystal system: isometric (cubic); Cleavage: perfect octahedral in 4 directions; Specific gravity: 3.18.

Hardness: 4 on Mohs scale
Color: emerald to mint green, clear, and pale translucent bands
Luster: vitreous

Identified October 3, 2026More mineral →

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Physical properties

Formation & geological history

Formed typically through hydrothermal processes as vein deposits in sedimentary rocks (like limestone) or in association with metallic ore veins and igneous intrusions.

Uses & applications

Popular as an ornamental carving, decorative egg, crystal healing specimen, and collector display piece. Industrially, raw fluorite is utilized as a flux in smelting and to produce hydrofluoric acid.

Geological facts

Fluorite gave its name to the phenomenon of fluorescence, glowing strongly under ultraviolet (UV) light. The internal rainbow flashes visible in this egg are caused by light refracting and interfering along internal cleavage fractures.

Field identification & locations

Identifiable by its softness (readily scratched by a steel nail/knife), distinct color zoning, perfect octahedral cleavage planes, and vitreous luster. Major commercial carving sources include China, Mexico, and Madagascar.