LogFAQs > #976990738

Transparent aluminum, which was a fictional material in Star Trek IV, is now a real thing. It's a see-through material that's three times harder than steel. Right now it's very expensive to make so it's limited mostly to defense applications, like making bulletproof glass that's thinner and stronger than traditional bulletproof glass, but eventually the cost may come down enough for it to be used in consumer products.

https://4dproducts.co.uk/transparent-aluminium-see-through-metal-is-now-a-reality/