sedimentary
Green Sea Glass
Man-made silicate glass (weathered)
Hardness of 5.5 to 7 on the Mohs scale, translucent to transparent green color, vitreous to frosted luster, amorphous crystal structure with no cleavage, specific gravity around 2.4 to 2.8.
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Physical properties
Hardness of 5.5 to 7 on the Mohs scale, translucent to transparent green color, vitreous to frosted luster, amorphous crystal structure with no cleavage, specific gravity around 2.4 to 2.8.
Formation & geological history
Formed from discarded glass products (bottles, jars) that have been broken down, tumbled, and smoothed by wave action, sand, and water over decades in marine or freshwater environments.
Uses & applications
Commonly used in jewelry making, crafting, mosaic art, and collected by beachcombers and hobbyists.
Geological facts
Green sea glass is often derived from old beverage bottles, medicine bottles, or insulators. The frosted appearance is caused by the abrasive action of sand and water over many years, creating microscopic C-shaped pits on the surface.
Field identification & locations
Found along the shores of oceans, large lakes, and rivers worldwide, especially near historical shipping lanes or settlements. Collectors identify it by its smooth, frosted edges and uniform thickness.
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