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Brazilian Amethyst Crystal Geode, Triangular Cavern

Description

South America, Brazil, ca. millions of years ago. An amethyst geode specimen displaying a sharply triangular cross-section with a rugged green and white exterior and a stunning interior lined with lustrous lavender-to-deep-purple quartz crystals. Layers of pale agate banding encircle the cavity, framing the crystal chamber and enhancing the natural contrast between the cool outer matrix and the vibrant amethyst within. A beautiful display piece with excellent color, clarity, and sculptural presence. Size: 7" L x 4" W x 7" H (17.8 cm x 10.2 cm x 17.8 cm)

Provenance: private southwestern Pennsylvania, USA collection, acquired prior to 2000

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#199578

Condition

Professionally cut and repaired. Several crystals in the very center are adhered with yellow glue residue on the surface.

Buyer's Premium

30%

Brazilian Amethyst Crystal Geode, Triangular Cavern

Lot 0131

Estimate $500-$750Mar 19, 2026, 10:00 AM EDT

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Meet the Auction House

Artemis Fine Arts

Artemis Fine ArtsLouisville, CO, United States

1493

4.8

9098

This auction is curated by:

Bob DodgeOwner/Executive Director, Antiquities & Pre-Columbian Art

Sydelle DienstfreyPhD. Art History, Director, Fine & Visual Arts

Asian | Ancient | Ethnographic | Fine Art

Mar 19, 2026 10:00 AM EDT

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