|First Appearance||Stiix and Stones|
Deepstone is an aquatic material that is mined from the bottom of the ocean in the world of Ninjago. The molecules that Deepstone consist of are constantly moving, yet still staying solid; making it an effective material used in both combat and defense against ghosts. One of its uses are to forge Aeroblades, a shuriken-like weapon that is highly effective against ghosts. They were also forged into armor for the Ninja to aid them in their fight against The Preeminent.