sedimentary
Hag Stone
Perforated Sedimentary Rock (primarily Siltstone or Mudstone)
Hardness: 3-5 (Mohs scale); Color: Yellow-orange to earthy tan; Luster: Dull/Earthy; Structure: Clastic; Features: Natural perforation caused by water erosion or boring organisms.
- Hardness
- 3-5 (Mohs scale)
- Color
- Yellow-orange to earthy tan
- Luster
- Dull/Earthy
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Physical properties
Hardness: 3-5 (Mohs scale); Color: Yellow-orange to earthy tan; Luster: Dull/Earthy; Structure: Clastic; Features: Natural perforation caused by water erosion or boring organisms.
Formation & geological history
Formed through the accumulation and litification of fine-grained sediments in aqueous environments. The characteristic hole is typically eroded over hundreds of years by water currents, small tumbling pebbles, or the boring activity of marine mollusks like Pholadidae.
Uses & applications
Traditionally used as a protective talisman or 'witch stone' in folklore; currently popular for beachcomber collections, jewelry, and spiritual practices.
Geological facts
In European folklore, looking through the hole of a hag stone was believed to reveal the invisible world of faeries, hidden spirits, or to ward off the 'Evil Eye.' They are often hung above doors for protection.
Field identification & locations
Identify in the field by looking for stones with a smooth, naturally occurring hole that passes entirely through. Commonly found on beaches, riverbeds, and coastal regions with significant wave action.
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