Fluorite Octahedron UV Fluorescent Crystal USA Natural Mineral Specimen Single Octahedra Display Piece with COA

Fluorite Single Octahedron – UV Fluorescent Mineral Specimen, U.S.A.

This genuine Fluorite Single Octahedron from the United States is a striking natural mineral specimen, prized for its sharp geometric form and ultraviolet fluorescence. Fluorite is one of the most recognisable collector minerals, known for its vibrant colours, cubic crystal symmetry, and its ability to glow under UV light due to trace element activators within the crystal structure.

You will receive the exact specimen shown in the photographs. This single octahedral crystal has been carefully chosen for its form, surface quality, and fluorescent response. Full sizing is available in the listing photos. This is a genuine mineral specimen and includes a Certificate of Authenticity lifetime guarantee generic card.

Mineral Identity & Crystal Structure

Fluorite is composed of calcium fluoride (CaF₂) and crystallises in the isometric (cubic) crystal system. While cubic crystals are the most common habit, fluorite also naturally forms octahedral crystals, particularly when cleavage planes are expressed or when growth conditions favour octahedral symmetry.

The octahedron is one of the classic geometric forms of the cubic system, consisting of eight triangular faces meeting at sharp points. This specimen displays that distinctive symmetry, making it an excellent educational and display example of crystallography in nature.

Fluorite has a Mohs hardness of 4 and is known for its perfect octahedral cleavage, meaning it naturally splits along octahedral planes. This property contributes to the formation of well-defined single octahedra such as this piece.

UV Fluorescence & Optical Properties

Fluorite is famous for giving its name to the phenomenon of fluorescence. Under ultraviolet light, many fluorite specimens emit a visible glow, commonly in shades of blue, purple, or other hues depending on trace impurities and structural characteristics.

The fluorescence in fluorite is typically caused by the presence of activator elements such as europium or other rare earth elements within the crystal lattice. When exposed to UV light, these elements absorb energy and re-emit it as visible light, producing the glowing effect that makes UV-reactive fluorite especially popular among collectors.

In normal lighting, fluorite may display a range of colours including green, purple, blue, yellow, or colourless, often with subtle zoning or internal clarity variations.

Geological Formation & U.S. Origin

Fluorite commonly forms in hydrothermal veins, where mineral-rich fluids circulate through fractures in host rock. It is frequently associated with minerals such as calcite, quartz, galena, sphalerite, and barite.

In the United States, notable fluorite deposits are historically associated with regions such as Illinois, Kentucky, Colorado, and New Mexico, where hydrothermal mineralisation created well-formed crystals within limestone or vein systems.

The geological environment allows fluorite crystals to grow in open cavities, producing sharp edges and clean faces, particularly in isolated octahedral specimens.

Collecting, Display & Educational Value

A single fluorite octahedron is a classic collector’s specimen, valued for both its aesthetic symmetry and its crystallographic significance. This piece is ideal for:

• Mineral and crystal collections
• UV mineral display cabinets
• Educational geology demonstrations
• Crystal form study
• Desk or shelf presentation

In spiritual traditions, fluorite is traditionally associated with focus and clarity; these interpretations are cultural and belief-based rather than scientific or medical claims.

The natural octahedral shape makes this specimen especially appealing to those interested in geometric crystal forms.

Authenticity & Presentation

• Genuine Fluorite mineral specimen
• Chemical formula: Calcium Fluoride (CaF₂)
• Isometric (cubic) crystal system
• Natural single octahedron form
• UV fluorescent under ultraviolet light
• Origin: United States
• Exact specimen shown – you will receive this crystal
• Includes Certificate of Authenticity lifetime guarantee generic card
• Full sizing available in listing photographs

A carefully selected U.S. Fluorite octahedron showcasing classic crystal geometry and ultraviolet fluorescence, offering strong collector appeal and scientific interest.