mineral
Sea Glass / Beach Agate Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness 6.5–7 (or 5.5 if glass), translucent pale white-yellowish, frosted/waxy to vitreous luster, amorphous or cryptocrystalline.
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Physical properties
Hardness 6.5–7 (or 5.5 if glass), translucent pale white-yellowish, frosted/waxy to vitreous luster, amorphous or cryptocrystalline.
Formation & geological history
Formed through prolonged mechanical weathering and hydration by waves and sand in coastal or riverbed environments.
Uses & applications
Popular for coastal crafts, wire-wrapped jewelry, tumbled pocket stones, and beachcombing collections.
Geological facts
Naturally rounded by constant wave tumbling, taking anywhere from several years to decades to develop its frosted, pitted surface.
Field identification & locations
Identified by its small, smooth, rounded flat-pebble shape and pitted frosted exterior; found abundantly on ocean beaches and gravel bars.
