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Tumbled White Howlite / 20-50mm AVG - 1 KILO LOT

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    Quantity: 1 kilogram

    Average size range: 20 to 50 millimeters

    Howlite is an uncommon boron-based mineral, and is normally white or colorless with thin black veins. It was first discovered by and named for Canadian chemist and geologist Henry How in 1868, who found it while investigating a gypsum quarry.

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