Ostentum
Ostentum is a fictional chemical element and metal that appears in a range of science-fiction works and world-building traditions. The name is derived from ostentation, reflecting its imagined beauty and prestige. In most depictions, ostentum is a superheavy metal with extraordinary density and a striking iridescent or luminescent surface when freshly prepared. Its exact properties vary by author, but common traits include a very high melting point, exceptional strength, and resistance to corrosion.
Ostentum is usually described as rare, either occurring in trace quantities in deep-space meteorites or produced
Chemically, ostentum is often portrayed as forming a variety of oxides and fluorides, with oxidation states
Historically, ostentum appears in speculative catalogs and world-building compendia rather than scientific literature. Its purported applications