Rainbonite

Rainbonite is an ore that is BOTH in Vanilla Azure Mines and Azure Mines Modded. It is found at the depths of 1000m-2000m in caves only. In AMM, it is used for mainly upgrading the Marketplace and sometimes Mining Operations just like vanilla. In modded though, it has a special pickaxe for it too. It is a rainbow coloured block glowing magenta in AMM.

Tips:

Try to find large caves, because they have a higher chance to contain Topaz and Rainbonite.

Trivia:

This is the second ore in the ”Cavern Exclusive” series.