Chet took it to be a type of unbreakable glass; in fact, he couldn't consider it as otherwise.

Then the crystal was encased in a box of unbreakable glass.

In the centre has a puzzle piece held in unbreakable glass.

They were in a sealed casket that had no lights beneath its top of unbreakable glass.

The windows are two layers of unbreakable, soundproof, bulletproof glass.

In our gym, we've had to put unbreakable glass in all the windows.

The woman in the little car had an enormous sliver of supposedly unbreakable glass through her neck.

The windows are of unbreakable glass, in case you contemplate a particularly untidy suicide.

He could see her pacing around inside, but she couldn't spot him through the unbreakable one-way glass.

Danny watched it race happily over the warm, unbreakable glass.