Hand-carved arrowheads and jagged spears made of obsidian, a sharp rock formed by volcanic magma, are remnants of vast ...

The Idaho Falls Gem and Mineral Society will be holding its 59th Annual Gem and Mineral Show next weekend at the Bonneville ...

Obsidian does not naturally occur in Alberta where the artifacts are being unearthed at Early Prehistoric archaeological ...

Some of the obsidian artifacts, including arrowheads and spear tips, traveled nearly 750 miles from their source, according to Allan. An obsidian spear head from the Red Deer area. Photo by Todd ...