Btvs This article is about a subject whose real name is unknown, and is known only by a title, nickname or alias.

A mesmerizing crystal. Stare at it for more than a few seconds and it puts one in a deep trance.
―Rupert Giles[src]

Mesmerizing crystal was how Rupert Giles referred to a magical blue crystal with hypnotic proprieties.


I thought we'd start with the grounding crystal again. Now, look very carefully for the tiny flaw at its core. Buffy, I think we need to concentrate now. Look for the flaw at its center.
―Rupert Giles[src]

In 1999, Rupert Giles used this object to distract Buffy Summers, under the pretext of testing her knowledge on crystals. She made her concentrate on the “grounding” crystal, more specifically a flaw at its core.

While she was under the crystal’s trance, the Watcher secretly injected her with a compound that inhibited her Slayer abilities, in preparation for her Tento di Cruciamentum. To remove her from its trance, Giles would simply move his hand in front of the crystal, breaking her visual contact with its core.[1]



  1. "Helpless"
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