Translates as "Transformation Brooch", this was the brooch given to Usagi by Luna so she could transform into Sailor Moon. It's gold in color features the aura colors of Sailor Mercury, Mars, Jupiter, and Venus around the edge. The brooch is activated when Usagi yells the phrase: "Moon Prism Power Make Up!" which causes it to release pink ribbons around Usagi's body, transforming her into Sailor Moon. When not in use, Usagi will wear it on her school uniform (attached to her chest bow), or on non-school days, she carries it around in a pocket.