Triquetra

The triquetra is a symmetrical triangular ornament of three interlaced arcs used on metalwork and stone crosses.

Description
The triquetra is an ancient Indo-European three-pointed symbol representing three-way unity. Sometimes it has a circle running through it and other times it does not. The circle in many belief systems, is a symbol of eternity. For Pagans/Wiccans it represents the Triple Goddess as the Maiden, Mother, and Crone.

Many covens and individual witches use the Triquetra as their symbol, though it is mainly used as the symbol of the Charmed Ones' bond through the Power of Three and Warren Line of witches.

Examples
The Halliwell Witches
 * The Triquetra can be found on the cover of the Halliwell Book of Shadows
 * On the Halliwell spirit board.
 * The collar of Kit, the Charmed Ones' pet cat and familiar.