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A polished Cold Mountain Thunderegg specimen pair featuring brecciated jasper in muted pink and orange hues, with dark brick red details.
Polished faces: 6.3cm x 4.8cm and 6.4cm x 4.7cm
Approx. 1" deep
6oz together
Cold Mountain Thundereggs are from the Sierra Mountains in Mexico. The thundereggs can contain water banding and feature red, mauve, or black “webbing.” While technically a rhyolite due to its thunderegg nature, Cold Mountain Thundereggs are highly silicate and feature large amounts of brecciation that has also been filled with silica, so this material takes an exceptional polish, making it ideal for both cabochons and specimens.