Her raised arms signify that the Goddess invokes the power of the spiral within her to bring life. The Goddess is the origin of everything, she is the beginning but also the end, She is the one who gave birth to the universe and the one who can destroy everything for its regeneration.
A five-pointed star (pentagram) with a circle around it is referred to as a pentacle. This circle represents sacred space in which the fifth element of spirit controls the four earthly elements.
In good magic today (with the top pointed upwards) it is often used as a symbol to support transmission and communication with the spirit world. Its five points are often seen to represent the four classic elements of earth, water, air and fire joining with the fifth element of spirit to create life
