Hellstone

Quote from PESTELE

It's hard to find hellstone, but when it's microevent with -50% cooldown on missions, you can change the pact with agility on pact with -50% cooldown missions. You will get endless missions and you can enter underworld to find suffixes with hellstone. After that, go learn 1 scroll(parchment) with hellstone and go to forge spurius of the inferno, for example, with orange/red smarald and green/white/blue hellstone.
That's how i do, also you can forge purmanns instead of spurius, it's lower on level and you need only granats(red stone,like smarald,idk in english)

PESTELE all described

Mandalus, Dairus, Spurius of Gloom/of the Inferno/ of the Apparition are good for the forge with Hellstones. Scribonius is the best for high lvl.

good job

Quote from Danisa

Any tips for farming hellstones ?

Yes.

Forged it into the costume event.

Melting into raw material drop event.

Good luck.