A Piraus Crystal is a special lightsaber crystal that grants a small bonus to the Jedi using it. Jedi do not automatically get a Piraus Crystal. Instead, Maester d'Dac will grant one to Jedi if they meet any of the following conditions:

• They have completed a mission related to the Aquatic Geode of Piraus
• They have completed some other mission for Maester d'Dac
• They have become Jedi Knights and are in good standing with the Order

To gain the crystal some meditation and choices are required as listed on the relevant forum post

Effects

A lightsaber with a Piraus crystal will offer an advantage to the user. The exact effect may be chosen from among the following 5 options:

• +1 🗡 Strike
• +1 🛡 Defense
• +2 🗡 Strike when fighting under water
• +1 🗡 Strike and +1 🛡 Defense when fighting under water
• +2 🛡 Defense when fighting under water

The crystals cannot be combined - only one bonus applies at all times