Gemcutter’s Incubator is an incubator. Incubator is a new item class introduced in the legion league. They are PoE currency items which can be applied to a piece of equipment to guarantee an item drop of a specific type after the specified amount of monsters has been killed. Each equipment can incubate one item at a time.
Right click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters.
Adds an incubated Quality Gem item to an equippable item
Both active and support skill gems may have quality. Every skill is affected by quality differently, but frequently it somehow improves the damage dealt with the skill. Buffs and curses, obviously, do not have their damage improved. Even those that do have their damage improved will see different rates of improvement for a given amount of quality.
The quality of skill gems may be improved with a Gemcutter’s Prism. These upgrades always improve a skill’s quality by 1%. Alternatively, a level 20 skill gem and a Gemcutter’s Prism can be sold for a level 1 gem with 20% quality.
The effect of quality scales with the base quality effect, however, only whole numbers will be granted (and thus the effect will always be rounded down); for example 3% quality on a gem with 0.5% effect will only grant 1% effect and not 1.5% effect. Effects that have some degree of fractions naturally are rounded to their natural bases (i.e. seconds will be rounded to milliseconds, etc.).
It is possible to get a gem’s quality above 20% through corruption, the use of Enhance Support and certain gear.