Sea Glass, Beach Glass, Tumbled Glass
What's the Difference?
"Sea Glass" and "Beach Glass"Much of the interest in tumbling glass has been inspired by materials known as "sea glass" and "beach glass." These are naturally-tumbled glasses that can be found along ocean beaches, river banks and lake fronts in many parts of the world.
These pieces of glass might have once been part of a glass jar or bottle that was broken along the beach or dumped in an offshore trash disposal site. Wave or current action then picked up the glass and tumbled it along the bottom - with sand on the bottom serving as a natural abrasive. Over time that tumbling action rounded the pieces of glass, smoothed their surfaces and gave them a frosted finish.
Naturally-tumbled glass found at an ocean is called "sea glass." When it is found along a lake or a river it is called "beach glass." The names "sea glass" and "beach glass" attribute a provenance to the glass and imply a naturally-tumbled material.
If you process glass in a tumbler it would be incorrect to use the names "sea glass" or "beach glass" to describe it. Some people think that it would be unethical. These names imply a naturally-tumbled glass and the people who find it are entitled to claim that romantic provenance. Glass processed in a tumbler should be called "craft glass" or "tumbled glass."
Lots of people have made a hobby out of searching for sea glass and beach glass and consider each piece that they find a treasure. They use attractive pieces of naturally-tumbled glass to make jewelry or other craft projects.
Sea glass is not easy to find today and it will become even harder to find in the future. It declines in abundance as plastic containers and recycling reduce the amount of glass that enters the beach environment. Landfills have also replaced ocean dumping as a disposal method for trash.
The problem with using naturally-tumbled glasses in craft projects is a reliable source of supply. This is what motivates many people to produce tumbled glass in a rock tumbler. Others are motivated by the bright gemmy appearance of highly polished glass.