Anthropogenic (Man-made material processed by nature)
Sea Glass (Teal/Turquoise)
Amorphous Silica (SiO2) with trace metal oxides
Hardness: 5.5-7 (Mohs scale); Color: Teal/Turquoise; Luster: Frosted/Vitreous; Structure: Amorphous (non-crystalline); Cleavage: Conchoidal; Specific Gravity: ~2.4-2.8
- Hardness
- 5
- Color
- Teal/Turquoise
- Luster
- Frosted/Vitreous
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Physical properties
Hardness: 5.5-7 (Mohs scale); Color: Teal/Turquoise; Luster: Frosted/Vitreous; Structure: Amorphous (non-crystalline); Cleavage: Conchoidal; Specific Gravity: ~2.4-2.8
Formation & geological history
Formed from discarded glass bottles or jars that have been tumbled in salt water and sand for 20-50 years. This physical and chemical weathering creates a rounded, frosted surface texture.
Uses & applications
Used primarily in jewelry making (wire wrapping, necklaces), home decor, and as a popular collectible item for beachcombers.
Geological facts
Teal sea glass often originates from vintage baking soda bottles, mineral water bottles, or ink wells from the late 19th and early 20th centuries. The 'frosted' look is caused by hydration where salt water leaches the lime and soda from the glass surface.
Field identification & locations
Identify in the field by its frosted 'pitted' surface, rounded edges, and translucency. It is commonly found on rocky or high-energy beaches near historical dumping sites or coastal cities.
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