Banded Fluorite Tower — Multicolour Zoning

Banded Fluorite Tower — Multicolour Zoning 

A polished fluorite tower displaying distinct natural colour banding, transitioning through soft greens, purples, and warm amber tones.

These bands form during crystal growth as trace elements and environmental conditions shift, creating visible layers within the structure. The polished finish enhances these internal zones, giving each face a slightly different visual depth.

Key Features

• Mineral Type: Fluorite

• Chemical Formula: CaF₂

• Crystal System: Cubic (Isometric)

• Formation: Hydrothermal vein deposition

• Colour: Green, purple, yellow, colourless banding

• Transparency: Transparent to translucent

• Lustre: Vitreous

Feature Highlights

• Clear multicolour banding (zoning)

• Visible layered crystal growth structure

• Light passes through thinner sections enhancing colour contrast

• Clean polished tower shape for display

• Natural inclusions and internal textures

• Untreated — all colour is naturally occurring

Dimensions

• Size: 8.7 cm x 2.4 cm

• Weight: 80 grams

Geological & Scientific Notes

Fluorite forms from mineral-rich hydrothermal fluids moving through fractures in rock.

The banding is caused by: • Variations in trace elements

• Changes in temperature and chemistry during growth

• Natural radiation exposure affecting colour centres

Each visible layer represents a different stage of formation, effectively preserving a timeline of the crystal’s growth conditions.

Care & Handling

• Mohs hardness: 4

• Relatively soft — avoid knocks and drops

• Perfect cleavage — can split if impacted

• Keep out of prolonged direct sunlight (colour may fade)

• Clean with a soft cloth — avoid chemicals

• Store separately from harder minerals