Pentagon with star inside, on headstone?

My great grandmother's headstone has a hand with finger pointing upwards to a pentagon with star inside. There is no additional detail on the star. Does anyone know what this could symbolize? Here's a link to the picture of the headstone.... http://o.mfcreative.com/f2/file14/objects/0/7/6/e076f494-20ad-47f3-b751-40ca5ca890e7-1.jpg