Zones / Brimstone Pits

Hissing Pebble

Hold it to your ear and it hisses like a vent a long way off.

Tier
Common
Base odds
1 in 19
Sell value
2.57B coins
Zone
Brimstone Pits

With a mutation

Ancient
128B coins
Glitched
38.6B coins
Radiant
12.8B coins
Shiny
5.14B coins

Your luck, pets and passes make rare gems more likely than the base odds shown.