sedimentary
Hag Stone
Calcareous sedimentary rock (often Chert, Flint, or Limestone)
Hardness: 3-7 (variable); Color: Cream, tan, gray; Luster: Matte/earthy; Texture: Smooth, water-worn with a natural perforation; Structure: Amorphous/cryptocrystalline.
- Hardness
- 3-7 (variable)
- Color
- Cream, tan, gray
- Luster
- Matte/earthy
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Physical properties
Hardness: 3-7 (variable); Color: Cream, tan, gray; Luster: Matte/earthy; Texture: Smooth, water-worn with a natural perforation; Structure: Amorphous/cryptocrystalline.
Formation & geological history
Formed through physical and chemical weathering. In many cases, these stones are limestone or flint where a softer fossil inclusion (like a briozoan or sea urchin part) or a weak mineral pocket has eroded away due to the action of running water or waves.
Uses & applications
Primarily used as a lucky charm, in folk magic (for protection), as decorative garden stones, or in jewelry.
Geological facts
In European folklore, these are also known as Adder Stones, Hole-ey Stones, or Witch Stones. They were traditionally hung on doors or around the necks of livestock to ward off evil spirits and nightmares.
Field identification & locations
Found on beaches or in riverbeds. Identify by looking for a hole that has been clearly bored through naturally by water action rather than by human tools. Often found in areas with high limestone or flint deposits.
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