Ethereal Gem

Ethereal Gems give the item an particle effect, and changes its quality to Unusual. As of now they can only be used on custom couriers. Adding a Prismatic Gem to the same courier will alter the color of most Unusual effects.

Socketing
Ethereal Gems can only be extracted with a Master Artificer's Hammer. Doing so will destroy the courier.

List
More previews are available on individual gem pages.

Please add new or missing gems to this list.