Sea Glass

Easy to obtain
Sea Glass specimen - rock identification

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

Rarity
3.0out of 5.0
60%
Popularity
3.8out of 5.0
76%
Beauty
4.0out of 5.0
80%
Cultural Value
2.5out of 5.0
50%
Collection Value
3.5out of 5.0
70%

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.

Preview only. Full pricing comps and valuation report in the app.

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.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

More Images

Sea Glass specimen 2
© Tomcat Ranger

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

Mermaid TearsBeach Glass
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