Notice: This article uses content directly taken from the Phoenix Stone article at the Vampire Diaries Wiki, and is licensed under the Creative Commons Attribution-Share Alike License.
The Phoenix Stone was a red, round-cut gemstone with several veins within that swirl when activated. The stone was part of The Phoenix Sword created as a supernatural prison to trap and house vampire souls. As such, the stone can also be used to magically reunite a vampire soul trapped inside of it with the soul's body.
After Mary Louise and Nora Hildegard destroyed the stone, all Vampires that were trapped inside the stone are now free and are possessing corpses of recently deceased.