Believed to be one of the oldest religious symbols, the sun cross, or sun wheel / solar wheel has appeared in many religions and societies since neolithic times. The sun cross is associated with Odin and was referred to as 'Odin's Cross' in Viking times. The four quarters may represent the four seasons, with the centre hole being the Sun, although in Viking times they only had 2 seasons, so this is open to interpretation.
Available here in solid brass, we also have this in sterling silver, bronze, horn and bone.
Diameter - 30mm (1.2 inch).
Depth - 1.5mm.
Weight - 4g (0.15oz).