JewelCraft is a coming consumable item in Legion created by Jewelcrafting. It will be available at skill level 700 to craft. It can be used by anyone and can be auctioned or traded.
Using JewelCraft will start a minigame. This is the associated achievement - Hot Swapper
Engineering has a similar item - Blingtron's Circuit Design Tutorial. This item is also consumable and starts a minigame. It has an associated achievement: The Shortest Distance.
Kindly Reminder:Possible account termination when using illegal leveling or illegally obtained gold.