sedimentary
Hag Stone
Perforated Quartz Pebble / Sedimentary Rock
Hardness of 7 on the Mohs scale (if quartz), white to light gray color, dull to vitreous luster, conchoidal fracture, smooth water-worn texture with a naturally formed hole right through the center.
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Physical properties
Hardness of 7 on the Mohs scale (if quartz), white to light gray color, dull to vitreous luster, conchoidal fracture, smooth water-worn texture with a naturally formed hole right through the center.
Formation & geological history
Formed through the natural weathering, erosion, and water-tumble action in rivers, streams, or ocean surf, where softer mineral inclusions or fossils within a sedimentary rock or pebble erode away completely over time, leaving a hole.
Uses & applications
Traditionally used as a protective amulet or talisman in folklore, sometimes called adder stones, witch stones, or holy stones, believed in folklore to ward off negative energy or allow sight into the spirit world.
Geological facts
In European folklore, hag stones were traditionally tied to keys, hung by beds, or placed on boats and horses to protect against witchcraft, nightmares, and evil spirits. Looking through the hole was famously believed to allow one to see fairies and hidden magical creatures.
Field identification & locations
Easily identified by the smooth, rounded, water-worn appearance characteristic of pebbles found in riverbeds or beaches, coupled with a completely natural perforation running all the way through the stone.
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