Quartz Glass

As he looked through the quartz-glass window of the inside door, the man had seen why. ❋ Unknown (2010)

The suits, shaped like huge steel eggs with a quartz-glass view plate for the operator seated within, had mechanical arms and legs. ❋ Victor [pseud.] Appleton (N/A)

Out the quartz-glass windows, the great door seemed to descend. ❋ Murray Leinster (1935)

Out the quartz-glass ports he could see ahead, out the end of the cage through the monstrous doorway to the desert beyond. ❋ Murray Leinster (1935)

You will be able to leave the ship and move about inside the Platform, to lunch if you choose, to buy souvenirs and mail them back and to view Earth from a height of four thousand miles through quartz-glass windows. ❋ Murray Leinster (1935)

Long Island is one of 14 initial sites nationwide where doctors will implant the miniature quartz-glass instrument, developed to combat the worst stage of a disease that destroys the macula, the light-sensitive cluster of cells in the retina at the rear of the eye. ❋ Unknown (2010)