Tiara of stars

The tiara of stars was a unique magic item in the form of a diadem that was sacred to the goddess Selûne. It was worn by the Priestess of the High Moonlight, the head of the House of the Moon temple in Waterdeep.

Powers
It had a number of unique, unspecified powers. Among these, it functioned as a crown of leadership.

History
In the mid-to-late 14 century DR, Naneatha Suaril wore the tiara of stars on formal occasions and when required.