Moonstone Shards

What we know

Synthetic shards mimic full-moon potency; counteracted Irredel's wolfsbane suppression (Session 22 @ 00:40:00)
Origin: Volenta's Court lab at Lake Zarovich hideout (Session 22 @ 00:40:00)
Carried in frayed bag of holding on Irredel ~two days before discovery (Session 22 @ 00:40:00)
Dr. Rudolph van Richten and Father Lucian Petrovich removed shards from proximity to Irredel (Session 22 @ 00:40:00)
Party has not identified an opposing "sunstone" counterpart (Session 22 @ transcript)

Contributed to midnight werewolf crisis; Sildir's left arm amputated after Irredel bit him (Session 22 @ 00:58:00)