Bismuth

Bismuth is a ore found in Space Castaway.

Appearance
Bismuth has a rainbow-ish look, and a glassy outside when polished.

When found, however, it is very gray.

Usage
While Bismuth isn't useful for tools, it is a great use for armor and upgrade modules.

Found
Bismuth can be found in underwater volcanoes and dead zone ravines.

Bismuth can also be found rarely in reefs and Clay Canyons.

Trivia

 * Bismuth is a real life mineral.