Nahcylite

Nahcylite is an uncommon mineral found most commonly in the mountain ranges of (Insert Seibeq Continent here). It is a unique crystal in that while its potential applications for use are limited, it tends to change it's shape in ways that almost mimic other, more desired minerals. Comparatively brittle to the minerals it seems to copy, Nahcylite is regarded as "waste product" left by miners as they dig their tunnels. The environments the gemstone can be found in are numerous, from sturdy basalt to delicate limestone, river banks to sea beds. Nahcylite has earned the name "Trickster's Rainbow" from it's ability to reform it's visual structure based on the heat, moisture and resistance in the earth surrounding it. Although a headache to miners and smiths worldwide, one country purposefully purchases over 1000 metric tons per year from the nations with the most abundant quantity of the odd gems. Unbeknownst to even their neighbors, Arakujii runesmiths discovered almost a century ago that by refining the gems in a particular way gave them the magical property of freely sustained levitation. The immense number of uses that Nahcylite suddenly had was not lost on the runesmiths, quickly organizing to get an audience with the royal family. They promptly and humbly requested that the gem's newfound power be hidden from the world in an effort to make Arakujii the most powerful country in the world. Ninety-four years later and even the general populace of Arakujii is still unaware of how their airships truly fly.