Green Opaque Crystal

Green Opaque Crystal is a Grade 3 premium color crystal crafting material.

Source
Green Opaque Crystals can be obtained through the gathering crew skill Archaeology. It can be harvested from Opaque Green Crystal Formations on Alderaan, which requires level 120 Archaeology or from level 25-32 Archaeology missions. There is also a chance to obtain Green Opaque Crystals from reverse engineering the appropriate modified color crystals.

Uses
Green Opaque Crystals are used in several Artifice schematics.