“Which is why it is sealed in this case made of Clearstone, the hardest substance known to human. Impenetrable by any living being.”
Dr. Saunders to the ninja and Wu, "Day of the Departed"

Clearstone is the hardest substance known to man.


Day of the Departed

Dr. Saunders tells the ninja that the case for the Yin Blade is made of solid Clearstone. Cole is able to reach through the clearstone and grab the Yin Blade; because he's a ghost.


When the ninja try to get a Scroll of Forbidden Spinjitzu, they can't open the case. Cole notes that it's probably Clearstone, but that's not clear, because Nya found that the case could be easily opened.


LEGO Ninjago: Masters of Spinjitzu

Day of the Departed


  • Ghosts are known to be able to go through Clearstone.


Non-Elemental substances


Blue Crystal · Clearstone · Deepstone · Vengestone


Great Devourer's venom · Tiger Widow venom · Venomari venom


Blast Sap · Chronosteel · Dark Matter · Darkness (Oni) · Kethanol · Spirit smoke · Zane's power source

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