- “It’s very powerful and probably very dangerous. It has a purifying power… cleansing power… possibly scrubbing bubbles. The translation is…anyway, it bestows strength to the right person who wears it.”
Lilah Morgan offered this Amulet, said to have purifying powers to the vampire Angel, along with a file with information about the situation in Sunnydale, in exchange for his acceptance of the position as C.E.O. of Wolfram & Hart Los Angeles.
The Battle of the Hellmouth
In handing the amulet (a Wolfram & Hart's property) to the vampire, Lilah said that it "apparently it's crucial for some kind of final battle". At first, Angel wanted to keep neither the file nor the amulet, and said that "Buffy can handle herself"; but after watching Connor in trouble, he took the amulet , went to Sunnydale  and gave it to Buffy. He told her that the amulet was very powerful and probably very dangerous; it had a purifying/cleansing power, and bestowed strength when worn by someone ensouled, but stronger than human — a Champion.
Buffy, being about to fight her ultimate battle against the First Evil and its army of Turok-Hans, gave the amulet to her Chosen Champion, Spike. In the middle of the battle, the amulet started working, and originating from Spike's body, powerful beams of golden light destroyed thousands of Turok-Hans in seconds. It caused the collapse of the Hellmouth, too, closing it forever. Unfortunately, Spike was consumed by fire from within, and burns to ashes, dying as a true hero .
Nineteen days later, and the amulet reappeared in Los Angeles, at Wolfram & Hart, inside an envelope (without sender) sent to Angel — and from it, a ghostly Spike was released. After some researching, Wesley concluded that Spike's essence had been trapped in the amulet, and nothing could destroy it — except if the object was taken to a consecrated place, like a church or a cemetery. It also stated that Spike was bound to the amulet; if it was destroyed, then Spike would cease to exist altogether. In addition, due to the effects of the amulet, Spike was also bound to Los Angeles and unable to leave the city limits (Although it may be that he was bound to the amulet itself rather than the city). 
After Spike's physical body was restored by Lindsey McDonald , the amulet and what it did to him was mentioned several times. When contemplating on whether or not Fred can be restored after her body was usurped by Illyria, Spike nonchalantly replies, "Flash-fried in a pillar of fire, saving the world. I got better." Later, when Team Angel were about to destroy the Circle of the Black Thorn, when Angel gave Spike his assignment (slaying the Fell Brethren), Spike adamantly declares "First off, I'm not wearing any amulets."
- "Just Rewards"
- "Unleashed" (Only mentioned)
- "Hell Bound"
- "Lineage" (Only mentioned)
- "Destiny" (Only mentioned)
- "Soul Purpose" (Only mentioned)
- "The Girl in Question" (Only mentioned)
- "Not Fade Away" (Only mentioned)