FLUORITE – Huge 15cm Purple Crystals, Annabel Lee Mine, Illinois, USA

This impressive Fluorite specimen is a true showpiece for serious collectors and museum-level displays, showcasing an abundance of large, well-developed crystals across its matrix. The individual crystals show sharp, flat cubic faces with a pleasing vitreous luster, allowing the eye to trace their geometry and growth structure clearly across the piece.

The color is the true highlight of this specimen: a deep, saturated purple tone that runs through the crystals with striking intensity, giving the piece a rich, refined visual character that is highly sought after among fluorite collectors. This coloration is typical of fluorite from the Illinois-Kentucky Fluorspar District, one of the most productive and historically significant fluorite regions in the world.

The specimen comes from the Annabel Lee Mine, located in the Harris Creek Mining Sub-District of Hardin County, Illinois. This mine operated only for a little over a decade before ceasing production in the mid-1990s, and the site has since been closed and is no longer accessible for collecting. As with all material from this now-depleted locality, well-formed cabinet-sized specimens like this one are becoming progressively harder to source, adding to their desirability among collectors of classic American minerals.

With its considerable size, weight, and the striking depth of its purple color, this specimen is equally suited to a mineralogical collection of high standing or as a bold natural centerpiece in a refined interior setting.

Fluorite is calcium fluoride, a halide mineral that crystallizes in the isometric system, most commonly forming cubes, sometimes combined with octahedral faces or showing stepped, mosaic-like surface growth. It typically forms in hydrothermal veins and cavities, and the material from Hardin County, Illinois originates from a classic Mississippi Valley-type mineralizing system that produced some of the largest and most colorful fluorite crystals known worldwide.

The deep purple color seen in this specimen is due to trace substitution of yttrium (and occasionally other rare-earth elements) for calcium within the crystal lattice, an effect that in fluorite can also be intensified over geological time by natural radiation exposure, which creates additional color centers in the crystal structure. This combination of causes is responsible for the intense, saturated purple tones characteristic of fluorite from this specific mining district.

Fluorite from the Illinois-Kentucky Fluorspar District commonly fluoresces blue to violet under ultraviolet light, a trait strongly associated with this locality; we recommend verifying this specific specimen under a UV lamp to confirm its individual fluorescent response. The Annabel Lee Mine itself is now closed, having operated only from the mid-1980s until 1995, which makes well-formed specimens from this source increasingly difficult to obtain.

• Formula: CaF₂ (Calcium Fluoride)
• Key chemical elements: Calcium, Fluorine
• Hardness (Mohs scale): 4
• Mineral class: Halides (Fluoride)
• Crystal system: Isometric (Cubic)
• Crystal habit: Cubic crystals
• Formation: Hydrothermal, Mississippi Valley-type deposit
• Color: Deep purple, caused by trace yttrium substitution and radiation-induced color centers
• Fluorescence: Commonly blue to violet under UV light (typical of this locality; recommended to verify on this specimen)
• Locality status: Closed/depleted mine (operated 1984–1995)

The Annabel Lee Mine was one of the last major fluorspar mines operated by the Ozark-Mahoning Company, opening in the mid-1980s before closing in 1995. It sits within the Harris Creek Mining Sub-District of Hardin County, part of the broader Illinois-Kentucky Fluorspar District, an area that for decades supplied a large share of the fluorite used industrially in the United States.

Fluorite from this district is famous worldwide among collectors for its large, well-formed cubic crystals and rich color saturation, and southern Illinois fluorite is even recognized as the official state mineral of Illinois. With mines like the Annabel Lee now closed and inaccessible, specimens recovered before closure are considered an increasingly scarce piece of American mineralogical history.

In crystal healing traditions, Fluorite is regarded as a stone of mental clarity and focus, believed to help clear confusion and support structured, disciplined thinking. It is often associated with calming energy, helping to soothe an overactive mind and encourage a balanced, orderly approach to study, decision-making and meditation.

This piece’s intense purple color, formed in the historic Annabel Lee Mine, strengthens its connection to the Third Eye chakra, traditionally linked to intuition, insight and inner vision, while also supporting the Solar Plexus chakra, associated with confidence, willpower and personal discipline. Its sharp, well-formed crystal faces are seen as a symbol of organized thought, inner strength and purposeful focus.

These interpretations are not scientifically proven.

Chakra: Solar Plexus, Third Eye

Photos: All photographs are taken under professional lighting conditions to accurately highlight crystal structure, color and detail. However, slight variations in tone and appearance may occur depending on screen calibration and ambient lighting conditions.

Shipping: All orders are shipped through selected reliable express couriers, with fast delivery (often 1–2 business days within Europe), full tracking, insurance coverage and professional protective packaging, as confirmed by customer feedback and reviews.

Multiple purchases can be consolidated into a single shipment, including items from different auctions or separate orders, by simply contacting us to arrange combined shipping. For high-value specimens, direct delivery by appointment is also available, either at home or at major European mineral shows and fairs.