Corrundum (Placer) - Mineral sledge hammer and infinite patience

and infinite patience

The ring is low profile and wears well

Approximate Size of Brachiopod Fossil: 1

often with a metallic sheen

Approximate size of 1 piece: 12mm x 78mm x 78mmInternal Diameter: 6cm

Corrundum (Placer) - Mineral sledge hammer and infinite patienceMined 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,