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Agate Slab. Brazil. ...
Description
Agate SlabBrazil
This impressive large-format Agate slab-likely a center-cut from a massive geode boulder-offers a striking visual composition that is increasingly rare in today's market. The outer rim displays rich, dark brownish-black banding with subtle accents of rare red hues, while the core transitions into near-colorless Quartz, creating a dramatic contrast. Three prominent internal cavities reveal Quartz crystals transected in cross-section, their geometric forms adding depth and texture to the composition. This slab is particularly well-suited for backlit display, either before a window or with integrated lighting, to fully showcase the internal crystal structure and banded zoning.
Measurements: 21.00 x 19.00 x 0.50 inches (53.34 x 48.26 x 1.27 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: $500 - up.
Auction Info
Buyer's Premium per Lot:
25% of the successful bid (minimum $49) per lot.
This lot is in: 1 -
Signature® Floor Session - Property of a Distinguished Southern California Collector (Live Floor, Live Phone, Mail, Fax, Internet, and Heritage Live):
(Lots 72001-72187) - 11:00 AM Central Time, Tuesday, December 2, 2025.
[Proxy bidding ends ten minutes prior to the session start time. Live Proxy bidding on Heritage Live now starts within 2 hours of when the auction opens for proxy bidding and continues through the live session.]
Exhibition Viewing Times, Title Page, Floor Session and License Information
Additional Location Info:
Heritage Auctions
2801 W. Airport Freeway
Dallas, TX 75261
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