This mod gives functionality to quartz. Quartz can be found in the Nether like always, but can also be obtained in the overwolrd by killing "Quartz Creepers".
Quartz is incredibly durable! Think of it as less efficient and strong than iron, but more durable than diamond!
A few cobblestone and a quartz can actually craft coal. You can use six quartz to create a "Quartz Ingot".
Quartz ingots are what's used to make weapons and armor. They're used the same way as iron ingots.
FORGE 1.12.2 NEEDED: https://files.minecraftforge.net/maven/net/minecraftforge/forge/index_1.12.2.html