Dragonglass

Dragonglass is an ore in BOTH Vanilla and Modded Azure Mines. In both versions, it is found in the hell layer, from depths 2000m-2400m. It is used in bulk for mid-game upgrades like Storage Management. It is a glowing purple block.

Tips:

It is MUCH more recommended to bring a high power pickaxe (Like Amethyst or Mithril for example), to farm this ore as an ingredient for upgrades. It’s also more common near the top of the hell layer.

Trivia:

This and Obsidian are the only two ores to have the same IRL ore (Obsidian).