Large Amethyst Cathedral Geode – 23.96 lb | Natural Uruguayan Specimen

One Of The Largest in the Collection: Amethyst Cathedral Geode from Artigas, Uruguay

At 23.96 lbs, this natural amethyst cathedral geode from Artigas, Uruguay is the largest and most architecturally imposing specimen in this collection. Its tall cathedral silhouette rises to a natural rounded peak, filled with a dense bed of medium-sized purple amethyst crystals that catch light with golden-silver flashes across every surface.

What defines this piece visually is the wide, arching band of white quartz that frames the crystal cavity from above — a natural arch formation that draws the eye inward and gives the specimen an almost architectural quality. The lateral face reveals an exceptionally detailed banded agate exterior, with concentric rings and translucent chalcedony zones that document millions of years of layered mineral growth.

The flat-cut base provides secure, stand-free display. At nearly 24 lbs, this cathedral demands a prominent location — a floor display, a large shelf, or a dedicated collector space. One of a kind.

Specifications

• Weight: 23.96 lb / 10.87 kg
• Formation: Cathedral geode, flat cut base
• Crystal color: Purple with golden-silver flash
• Special features: Wide white quartz arch framing the cavity, detailed banded agate exterior with concentric rings
• Origin: Artigas, Uruguay
• Self-standing: Stable flat-cut base — no stand required
• Traceability: Certificate of origin — emporiongems.com/pages/traceability