**Cost:** 2,000 GP **Weight:** 1 pound Signaling crystals are flat, reflective crystals mounted on a swivel. They (and a special coded language) were designed by the [[Antilan Empire|Antilans]] to facilitate inter-ship communication. Ships within [[Astromundi Cluster|Clusterspace]] still use the original Antilan coded language for communicating between ships. Signaling Crystals can be seen out to ten miles in the deeps of space, half that in an asteroid field or nebula. Larger versions visible out to fifty miles have been seen aboard Antilan [[Crystal Ship]]s, but no other race uses them.