Sea glass is weathered glass smoothed by the ocean's currents, often found on beaches. Good places to find sea glass include rocky beaches, areas near inlets or historical sites, and near jetties.

Enthusiasts compare it to diamonds. Sea glass—from pieces of bottles and jars—is trash, transformed by the sea and poetically reinterpreted as treasure. Its provenance points to the heyday of consumer ...

Nancy LaMotte's eyes are a clear blue-green, the color of antique Coca-Cola bottles, but brighter. She scans the sand at her feet: gritty knots of seaweed, smashed oyster shells, driftwood – wait!

After decades of tumbling in the ocean, glass that was once trash becomes treasure after it’s worn down into cloudy and perfectly smooth fragments—also known as sea glass. Sometimes called “mermaid’s ...