Glassteel is a Horatio-specific technology on the Galactic Warfare technology tree with a research cost of 18750 . It unlocks one Empire Improvement, requires research in Condensed Plasma, and allows no further research.
"This recently discovered and highly advanced material is transparent, yet has a hardness rating that rivals orichalcix. While the name has nothing to do with its origin or chemical properties, Horatio thought it sounded nice."
- -1 incremental Population Cost of Troops on Empire
"Ships built with interior glassteel bulkheads allow all Horatios to see what is going on at all times. As even the cargo of these ships is visible, what could be more natural than to load them with the most beautiful thing in the galaxy -- more Horatios?"