Dynamon crystals were sought by Avon on Xenon as a necessary part of the teleport system, but he was told by Gunn-Sar that they had "all been dug up".
Gunn-Sar regarded them as nothing more than "expensive baubles". However, the crystals proved essential as focus point for the telekinesis used by the Seska. These were worn in neck collars by the Seska, which could only be removed surgically. Once removed the wearer became, according to Pella, "no longer Seska", and lost her psionic powers.
Avon retrieved the dynamon crystal from Luxia's collar after she had been operated on by Nina, and fitted it into the teleport control to regain control of Scorpio from Pella. (TV: Power)