Demona's Tiara

Demona wearing her tiara in 1994.

Demona's tiara, among the rest of her ensemble in 1997.

Culen seizing Angel's tiara in 971

Demona's tiara is a piece of gold decorative jewelry that she's worn upon her brow since, at least, 971 AD.

In 971, when Angel was the hostage of King Culen, he seized her tiara and considered melting down the gold ad reforging it into a rattle for his infant son, Constantine. When he asked her where she acquired it, she didn't answer. After she was rescued, Mentor returned the tiara to her. ("The Oath")

As of 1997, Demona continues to wear it.