A Mandala is an Asian religious decoration made with geometrical elements. In Tibet, monks make very complex and beautiful mandalas from colored sand. They work on them for weeks and sweep them off to show the impermanence of all things in life and that there is no importance in getting attached to things.
The Star of David appears in the Asian cultures as part of the Sacred Geometry. This pendant is based on a Tibetan Mandala that I have seen and has the Star of David in its center.