A Pentacle is the single most powerful symbol of the ancients. It traverses many religions and is often misinterpreted as a dark symbol and harbinger of dark magick.
The Pentacle is the best representation of Nature. The Four elements of Nature: Earth (lower left point), Air (upper left point), Fire (lower right point) and Water (upper right point), are best represented by the points of the Pentacle. And the fifth point pointing upwards is the quintessential fifth element of nature, which is the Divine Spirit.