mineral
Quartz Pebble (Hag Stone / Adder Stone)
Silicon Dioxide (SiO2)
Hardness: 7 (Mohs scale), Color: Creamy white with iron staining (orange/brown), Luster: Vitreous to waxy, Crystal Structure: Trigonal/Hexagonal (though cryptocrystalline in texture), Specific Gravity: 2.65
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Physical properties
Hardness: 7 (Mohs scale), Color: Creamy white with iron staining (orange/brown), Luster: Vitreous to waxy, Crystal Structure: Trigonal/Hexagonal (though cryptocrystalline in texture), Specific Gravity: 2.65
Formation & geological history
Formed through the cooling of magma or hydrothermal activity; this specific specimen has been significantly water-worn and weathered in a river or coastal environment, creating the characteristic 'hag stone' hole through natural erosion.
Uses & applications
Used primarily as decorative landscaping stone or as a collector's item for folk magic/spiritual folklore. High-purity quartz is used in glassmaking and electronics.
Geological facts
This specimen is commonly referred to as a 'Hag Stone' or 'Odin Stone' because of the naturally occurring hole. Folklore suggests these stones grant the ability to see through illusions or protect against evil spirits.
Field identification & locations
Identify by its ability to scratch glass (hardness 7) and its smooth, water-worn texture. Commonly found in riverbeds, beaches, and glacial till deposits.
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