Green Igneous Crystal

Green Igneous Crystal is a Grade 2 premium color crystal crafting material.

Source
Green Igneous Crystals can be obtained through the gathering crew skill Archaeology. It can be harvested from Igneous Green Crystal Formations on Taris, which requires level 55 Archaeology or from level 17-24 Archaeology missions. There is also a chance to obtain Green Igneous Crystals from reverse engineering the appropriate modified color crystals.

Uses
Green Igneous Crystals are used in several Artifice schematics.