The tattoo appears to be inspired by this Egyptian falcon found at the Metropolitan Museum of Art in New York City. In Ancient Egyptian mythology, the falcon was associated with the solar god Horus. As you might know, the symbol of All-Seeing Eye derives from the Ancient Egyptian symbol of the Eye of Horus. In short, Rihanna's checkerboard dress and the emphasis on her Horus tattoo makes the above picture all about Masonic symbolism.
[EGYPT 29568] 'The waxing moon and the Eye of Horus at Dendera.' This forceful image of the moon on a pillar, decorated with the "healed eye" of Horus, can be found on the astronomical ceiling of the outer hypostyle hall in the Hathor Temple at Dendera. The astronomical ceiling consists of seven separate strips but here we are looking at a detail of the FIRST STRIP WEST from centre.
The Eye of Horus is an ancient Egyptian symbol of protection, royal power and good health. The eye is personified in the goddess Wadjet (also written as Wedjat, or "Udjat", Uadjet, Wedjoyet, Edjo or Uto). It is also known as ''The Eye of Ra''.