Ring mottle glass

Ring mottle glass is a type of glass that looks like it has circles or rings on the surface. This is because when the glass is made, the melted glass mixture is cooled at different rates in different areas, causing some parts to harden faster than others.

Think of it like pouring pancake batter into a pan – some parts of the batter may cook faster than others, creating a circle or ring shape.

The circular pattern on ring mottle glass is often used as a decorative feature and can be found on a variety of glass items such as vases, bowls, and cups.

So, if you see a glass item with a circle or ring pattern, there's a good chance it's ring mottle glass!