Jazzium: It's strong, fancy, and hard to obtain!
Step 1: Locate some Jazzium Ore in the Nether
Step 2: Mine it with a Diamond Pickaxe or better
Step 3: Smelt the ore into Jazzium Ingots
Step 4: Combine the ingots with Blaze Powder to create Flamed Jazzium Ingots
Step 5: Craft Tools and Armor with the Flamed Jazzium Ingots
(Note: the tools require blaze rods instead of sticks!)