Eastern Africa, Ethiopia, & North America, United States, Montana, ca. 72,000,000–66,000,000 BCE. An assorted group of natural history specimens including a dinosaur Richardoestesia tooth from the Hell Creek Formation, a polished chocolate opal, and two fragments of white opals. Size of brown opal: 1" D (2.5 cm D).

Provenance: private Hagar collection, Wildwood, Missouri, USA

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Item # 200635

  • Condition: Good. Chips and nicks to tooth enamel. Brown opal is polished.

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by Artemis Fine Arts
June 25, 2026 9:00 AM MDT
686 S. Taylor Avenue
Suite 108
Louisville, CO, US 80027

Artemis Fine Arts

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