sedimentary
Sea Glass
Man-made silicate glass
AI-generated identification · may be incorrectHardness of 5.5 to 7 on the Mohs scale, frosted matte texture, smooth rounded edges, and variable colors.
Identified More sedimentary →
Explore Sea Glass in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 5.5 to 7 on the Mohs scale, frosted matte texture, smooth rounded edges, and variable colors.
Formation & geological history
Formed from discarded glass objects weathered and tumbled by wave action over decades in marine environments.
Uses & applications
Used primarily in coastal jewelry, mosaic art, and by hobbyist collectors.
Geological facts
Genuine sea glass requires 20 to 40 years of tumbling in the ocean to achieve its characteristic frosted patina.
Field identification & locations
Found along saltwater beaches and lake shores worldwide; identified by its frosted surface and lack of sharp edges.
More like this
Other sedimentary specimens
Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion
Calcareous concretion; exact fossil and host-rock composition are not identifiable from the image
fossil
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Sandstone
Arenite
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary