Embedded Onyx

Embedded Onyx is an ore that only spawns in the Nether. It is not too uncommon, and each ore drops a single onyx when mined with a diamond, rune or dragon pickaxe. Any pickaxe made from a material worse than diamond will not produce an onyx when mining the block. Onyx is a valuable material in many end-game recipes, therefore it is recommended that rune and dragon pickaxes are saved to mine this block.