Many of the buildings are faced with flint, a hard glassy stone found in the local chalk rock.

Adder stone is a type of stone, usually glassy, with a naturally occurring hole through it.

At that moment there was a small commotion at the courtyard gate, and a man on a tired horse stepped onto the glassy stone.

In a moment it debouched into a little circle of glassy stones.

Then he saw that one of the glassy stones had fallen out of the circle, perhaps having been blown over by the wind.

Floor, walls and ceiling were of the green glassy stone, the walls decorated with gold frieze- work.

It is said to be a monolith of glassy stone, or stony glass, as some say.

The slope was steeper just before the wall and littered with jagged slabs of glassy black stone.

My heart still pounding, I grabbed the pendant and stared into the orange glassy stone.

On both sides of them the glassy smooth stone seemed to reach to the strip of blue high above them.