Star of David
The Star of David (Magen David in Hebrew, Shield of David, Solomon's Seal) is a generally recognized symbol of Judaism and Jewish identity. Geometrically it is a hexagram.
As a Jewish symbol
The petals of Lilium candidum form a Star of David
Red Star of David - the emblem of w:Magen David Adom, Israel's emergency medical services
A synagogue with the outline of a star of David
Inside the memorial at the site of the former Synagogue in Göttingen, Germany
Combination of Star of David/Christian cross on the wall of an old cemetery for both confessions, Berlin, Friedhof Wannsee, Lindenstraße, founded in 1886