Sea Glass

What is Sea Glass?
Sea glass is formed when glass fragments, typically from broken bottles, jars, or other glass objects, are tumbled and smoothed by the action of the ocean. Over time, the glass is eroded by the sand, water, and other elements, resulting in a frosted appearance and rounded edges. The color of sea glass depends on the original source of the glass, with common colors including green, brown, white, blue, and less frequently, red, orange, and purple. The value of sea glass is often determined by its color, rarity, and condition, with rare colors and well-preserved pieces being the most sought after.
Optical Properties
- Pleochroism
- None
Discover Values
Sea Glass Market Value Calculator
Estimate the market value of Sea Glass using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Sea Glass Localities Map
See where Sea Glass is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
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Quick Facts
Physical Properties
- Color
- Various, including green, brown, white, blue, red, orange, and purple
- Hardness (Mohs)
- 5.5-7
- Density
- 2.4-2.6 g/cm³
Chemical Properties
- Chemical Formula
- SiO2 (with varying amounts of other oxides)
- Elements
- Si, O, Na, Ca, Mg, Al, Fe
Also Known As

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