Nercathi
this ancient Twi'lek clan was known to have created three beautiful crystallite skulls to comemmorate a long-dead hero. Each skull represented one of the primary Twi'leki tenets - Jasshi'rr, Waala, and Keysshi. During the Galactic Civil War, the Nercathi were raided by the Empire for slaves, until they aligned themselves with the Alliance and fought back.