Gem Chip

Gem Chip is a crafting reagent used in Legion cooking, and as a Jewelcrafting-only quest objective. There are colored variants that are not used in any profession recipe, but are used to predict the next rare-quality gem (of matching color) from prospecting Felslate Ore.

Source
This item is looted from:


 * Prospecting ore that is mined from the Broken Isles
 * Scribes milling the Aethril gathered by herbalists
 * Pile of Gems created from Alchemy: Transmute Fish to Gems
 * Found Sack of Gems looted by players with the Boon of the Gemfinder shoulder enchantment

Cooking

 * Nightborne Delicacy Platter

As a quest objective

 * Truly Outrageous