mineral
Sea Glass
Man-made vitreous material (silica-based glass)
Hardness of 5.5 to 7 on the Mohs scale; light green to clear color; vitreous to frosted luster; amorphous crystal structure (non-crystalline); no true cleavage; conchoidal fracture.
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Physical properties
Hardness of 5.5 to 7 on the Mohs scale; light green to clear color; vitreous to frosted luster; amorphous crystal structure (non-crystalline); no true cleavage; conchoidal fracture.
Formation & geological history
Formed through the mechanical weathering and tumbling of discarded anthropogenic glass in marine or freshwater environments over decades.
Uses & applications
Collected by hobbyists, used in jewelry making, mosaic art, and home decor.
Geological facts
Genuine sea glass takes anywhere from 20 to over 40 years of constant tumbling in ocean waves and sand to achieve its characteristic frosted appearance and smooth edges.
Field identification & locations
Found along beaches, lakeshores, and riverbeds worldwide. Identified by its frosted, pitted surface and lack of sharp edges.
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