kyanite

kyanite
(n.) https://en.wikipedia.org/wiki/Kyanite 

hardness: 4.5 - 7
certain angles / parts of their body has the hardness of 7, their head is a 4.5 

snarky attitude, likes to mock other gems and play harmless pranks. just acts like an overall menace 

does patrol with sardonyx, bullies them constantly   

confident and laid back during battles with lunarians, sometimes a bit too carefree... it's almost like theyre trying to get captured

they don’t have any strong desires to be taken by the moon but they feel as if it would be ok if they did , it would be better than doing the same thing for the next 10,000 years or the possibility of them helplessly watching sardonyx get taken one day 

..eventually that carefree attitude turns to be their downfall as sardonyx gets taken in their place instead