Cobaltite
Cobaltite is a brilliant blue stone found as veins in numerous environments. It is not a usable ore. Cobaltite is particularly dense, making it useful for stone-fall traps and as catapult ammunition.
| Type | Inorganic / Stone |
| Uses | Masonry, Stone crafting, Construction |
| Properties | Fire-safe, NOT magma-safe |
| Material Value | 1 |
In real life
Source: https://www.flickr.com/photos/jsjgeology/26233803605