what is a nether crystal
Nether Quartz is an item obtained from the mining or smelting of Nether Quartz Ore. It is used in decorative blocks as well as a few Redstone components. Nether Quartz appeared in Pocket Edition before it did in the computer version. 2  Nether Quartz is the only mineral to craft its mineral block with 4 of it. 3  Nether Quartz, Coal and Lapis Lazuli are the only ore-obtained resources that are not dusts, ingots or gems.