Transparisteel

Transparisteel was a hard and completely transparent metal alloy. This made it a commonly used material for starship viewports, and the windows of strongholds, and other buildings where security was a must. In starship viewports, transparisteel could be made photosensitive to become more opaque near bright explosions, while traveling through hyperspace, and such. A major component in the make-up of transparisteel was lommite.

Transparisteel was much weaker than its opaque counterpart durasteel.

Darth Krayt encased Kol Skywalker's lightsaber in transparisteel to honor him.

Transparisteel was used in the windows of Skimmersubs.

Padmé Amidala had a transparisteel amulet made by her parents when she became the Queen of Naboo.