A design formed from six sets of alternating, inverted crescents arranged around two concentric rings and a larger, seventh circle inverting a bisection of the six outer arrangements.   

A design formed from six sets of alternating, inverted crescents arranged around two concentric rings and a larger, seventh circle inverting a bisection of the six outer arrangements.   (photo 2)

A design formed from six sets of alternating, inverted crescents arranged around two concentric rings and a larger, seventh circle inverting a bisection of the six outer arrangements.   (photo 3)