Fluorite. Rogerley Mine, Rogerley Quarry, Stanhope. County Durham. England, UK...

Description

Fluorite
Rogerley Mine, Rogerley Quarry, Stanhope
County Durham
England, UK

Renowned among collectors for their dramatic daylight fluorescence, Fluorite specimens from the Rogerley Mine in County Durham exhibit a remarkable visual transformation depending on the lighting environment. Under indoor lighting, the sharply defined crystals appear transparent green. When viewed in natural daylight-particularly outdoors-the same surfaces emit an intense blue-purple fluorescence, creating a striking, almost ethereal effect. This substantial specimen features numerous intergrown Fluorite crystals, the largest measuring up to 0.75 inch (1.9 cm), all displaying excellent transparency and surface luster. Scattered throughout the matrix are lustrous octahedral Galena crystals, adding both contrast and mineralogical interest. A classic and visually dynamic specimen from one of England's most celebrated Fluorite localities, it is presented on a custom-engraved base for elegant display.
Measurements: 7.01 x 6.50 x 5.98 inches (17.80 x 16.50 x 15.20 cm)

Provenance: Property of a Distinguished Southern California Collector, Ex. Gerard L. Cafesjian Collection

More Information: All items are offered "as is." While every effort has been made to accurately describe each lot, certain pieces—particularly fossils, minerals, and carvings—may exhibit minor imperfections, repairs, restorations, or natural wear consistent with age, excavation, or handling. Prospective buyers are encouraged to carefully review photographs and descriptions and to request additional condition information prior to bidding.


Estimate: $800 - up.

*Heritage Auctions strives to provide as much information as possible but encourages in-person inspection by bidders. Statements regarding the condition of objects are only for general guidance and should not be relied upon as complete statements of fact, and do not constitute a representation, warranty or assumption of liability by Heritage. Some condition issues may not be noted in the condition report but are apparent in the provided photos which are considered part of the condition report. Please note that we do not de-frame lots estimated at $1,000 or less and may not be able to provide additional details for lots valued under $500. Heritage does not guarantee the condition of frames and shall not be liable for any damage/scratches to frames, glass/acrylic coverings, original boxes, display accessories, or art that has slipped in frames. All lots are sold "AS IS" under the Terms & Conditions of Auction.