sedimentary

Hag Stone

Perforated Sedimentary Rock (typically Sandstone or Siltstone)

AI-generated identification · may be incorrect

Hardness: 6-7 (if silica-rich), Color: Tan, brown, or earthy ochre, Luster: Dull/Earthy, Texture: Pitted and porous (vesicular/vuggy), Feature: Naturally occurring hole passing through the specimen.

Identified July 13, 2026More sedimentary →

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Physical properties

Hardness: 6-7 (if silica-rich), Color: Tan, brown, or earthy ochre, Luster: Dull/Earthy, Texture: Pitted and porous (vesicular/vuggy), Feature: Naturally occurring hole passing through the specimen.

Formation & geological history

Formed through mechanical and chemical weathering where softer inclusions (like fossils, shells, or calcite nodules) are eroded out of a harder host rock by wave action or acidic water over thousands of years.

Uses & applications

Primarily used as a lucky charm, protective talisman, or decorative garden stone. Historically used in folklore to ward off nightmares or evil spirits.

Geological facts

Also known as Odin stones, fairy stones, or adder stones. One of the oldest known types of amulets across various cultures, believed to allow the wearer to see into the fairy realm if they look through the hole.

Field identification & locations

Look for stones with a clean, naturally bored hole in riverbeds or coastal shores. They are commonly found in the UK, Northern Europe, and coastal North America. The hole should show signs of natural wear rather than drilling marks.