He seemed to be inside a box of some glassy material.

The temperature gradient can be exploited to produce strong, glassy materials.

Each held a wand of some glassy material tipped with a blue or an amber light.

The matrix has numerous cracks filled with black glassy material.

A few billion years ago, lava flows and volcanic ash deposits covered the entire region with glassy material.

The long wall facing the foyer was of a gleaming, glassy material like that which lined the airlock.

If those had only been some glassy, shimmering material.

It would have been nice to be able to see out, but the glassy material was transparent only to a wide range of ultraviolet light.

Beneath the wetted area a little flake of the glassy material would crack and scale away.

Interstellar dust is composed of glassy materials with no crystalline order.