Corrundum (Placer) - Mineral sledge hammer 5mm x 4mm x 1

5mm x 4mm x 1

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4th Edition) captured several Gold publishing honors and has sold more than 35

Corrundum (Placer) - Mineral sledge hammer 5mm x 4mm x 1Mined from: Alder, Montana Description: This natural corundum placer specimen comes from the historic gem bearing gravels of Alder, Montanaan area long celebrated for its sapphires and other alluvial treasures. These water worn corundum fragments were naturally tumbled by ancient stream systems, giving them a slight rounded appearance that reflects their journey through time. Composed of aluminum oxide, corundum ranks 9 on the Mohs hardness scale,