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while the lighter matrix offers beautiful contrast and helps emphasize the crystal structure
Smaller: Phacops / Chotecops
trapping them inside as the silica continues to harden
Description: This one of a kind Amethyst sphere mineral specimen from Brazil has a polished grey and blue-grey agate exterior surrounding a deep natural crystal cavity
Amethyst - Sphere - Specimen fossil shell on matrix while the lighter matrix offersMined from: Rio Grande do Sul, Brazil Description: This one of a kind Amethyst sphere mineral specimen from Brazil has a polished grey and blue grey agate exterior surrounding a deep natural crystal cavity. The opening is lined with clear to pale lavender quartz and Amethyst crystals, with darker purple crystals visible farther inside. Small orange red iron oxide staining appears on several crystal points near the opening, adding natural colour