Gemcutter's Prism
Gemcutter's PrismStack Size: 20Improves the quality of a gemRight click this item then left click a gem to apply it. The maximum quality is 20%.
Shift click to unstack.
Shift click to unstack.
A Gemcutter's Prism (GCP) is a currency item that can be used to improve the quality of a gem. Each Gemcutter's Prism will always raise the quality by 1%.
Gemcutter's Prisms can be obtained by vendoring gems with their quality adding up to at least 40%.
Vendoring a Gemcutter's Prism with a level 20 gem will give you that gem on level one with 20% quality on it.