Melanophlogite Pseudomorph on Blue Chalcedony. Namibia. ...
Description
Melanophlogite Pseudomorph on Blue ChalcedonyNamibia
An uncommon and visually intriguing specimen, this piece features intergrown cubic forms of Blue Chalcedony that have pseudomorphed after Melanophlogite-a rare Silica polymorph known for forming delicate, cage-like cubic crystals. The subtle blue tones of the Chalcedony provide a soft, translucent base, while a contrasting white overgrowth highlights the original cubic structure and enhances visual depth. Such pseudomorphic replacements are highly sought after for their unusual crystallography and aesthetic appeal, especially when preserved in this level of detail. A fine specimen for collectors of silica minerals and mineralogical curiosities.
Measurements: 3.98 x 3.00 x 2.00 inches (10.10 x 7.62 x 5.08 cm)
Provenance: Property of a Distinguished Southern California Collector
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: $400 - up.
Auction Info
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25% of the successful bid (minimum $49) per lot.
This lot is in: 2 -
Signature® Internet Session - No Floor or Phone Bidding (Mail, Fax, Internet, and Heritage Live):
(Lots 72188-72346) - 4:00 PM Central Time, Tuesday, December 2, 2025.
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Additional Location Info:
Heritage Auctions
2801 W. Airport Freeway
Dallas, TX 75261
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