Because he saw himself as better than everyone else, diadems were wore as a sign of royalty, he probably thought of himself as an extreme intellect.
Diadem of gold or precious stones.The queen wore diadem of jewels and gold
In a way, Cleopatra wore a crown. By the time of Cleopatra's rule, the pharaohs wore diadems with a cobra on the forehead. Cleopatra's diadem or "crown" was said to have three cobras on it.
I am wearing a diadem.
He dressed kinda weird for his time. He wore a white robe and trousers.
The diadem was one of Tom Riddle's Horcruxes. A diadem is like a sort of crown.
Operation Diadem happened in 1944.
She adorned her head with a sparkling diadem for the royal ball.
Many Greek goddesses actually wear a diadem in Greek mythology, as it is an emblem for regal power or dignity. Back in Greek society however, the diadem also suggested a superhuman status, and demanded respect that was shown to the Gods. Given that Hera is the wife of Zeus, one can speculate that she wore a diadem to show that she is the Queen of the Gods, and therefore demands respect for her position. An interesting thing to note, however, is that many Gods connected with death and the afterlife were seen wearing diadems - feel free to find a connection between this fact and Hera.
A zodiac diadem is an ASTROLOGICAL CROWN. or something very similar to that.
Madonna with the Blue Diadem was created in 1511.
Mograbin diadem snake was created in 1923.
The diadem was hidden in the Room of Requirement