Skull large - Volcano Agate

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Volcano agate is a type of chalcedony that forms in gas cavities within volcanic rock, often featuring distinctive, intricate banding and, commonly, UV-reactive properties. Skull A : 3.5" x 2.5" Skull B: 3.75" x 2.65" Skull C: 3.5" x 2.5" Skull D: 3.5" x 3" Skull E: 3.5" x 3" Show more