The Pentagram represents the elements of Air, Fire, Water, and Earth, along with the Spirit. The circle that makes the Pentagram a Pentacle binds those five together into a unified symbol.
The problem with the pentacle, of course, is that the five-sided star was co-opted by self-styled "Satanists" as their symbol. Christians of many denominations freak out when they see pentacles/pentagrams. There are many in the Earth-religion community who are quite willing to get in the faces of those who try to associate these symbols with Christian-defined/created evil. But for those in the Catholic Closet, wearing a pentacle is just looking for not only arguments, but can have serious personal consequences.
Teenage pagans and witches are willing to do the rebel-thing, wearing symbols that light up their teachers and principals. The student wearing a pentacle in public school is looking for a fight. The student in a Catholic school who does is looking to get kicked out.
There's an alternative to the pentacle, the Solar Cross:
The Solar Cross, unlike the Patriarchal or Calvary Cross, is equal-armed, and surrounded by a circle. To many in the Earth-religion community, the arms of the Solar Cross represent the four Elements, bound by Spirit. Another possibility is to wear a Solar Cross that has a stone set in the center, the stone representing Spirit.
If your goal is to acknowledge the relationship of the Elements and the Spirit, both the Pentacle and the Solar Cross do a fine job. The difference is that the latter does not arouse panic and fear among the ignorant. Christians see what they choose to see. They'll look at a Solar Cross, see a Christian symbol, and leave it at that.
A third symbol is often related to the "sun wheel" symbol, the Brigid Cross:
The Brigid Cross is generally regarded as a Christian symbol, but it's design is so untraditional that it will most likely draw more attention than a Solar Cross. My favorite use of the Brigid Cross is by Archbishop "Blackie" Ryan, the fictional sleuth created by Fr. Andrew Greeley. Archbishop Blackie's episcopal cross is a Brigid Cross, which always gets noticed. This cross is almost guaranteed to raise eyebrows and start conversations.
Raised eyebrows are often something that one in the Catholic Closet wants to avoid, but still, it's a gorgeous cross.



