Cosmic Heart Compact

The Cosmic Heart Compact was the third transformation item that allowed Usagi to transform into Sailor Moon. It was an upgrade to the Crystal Star.

The transformation item Usagi used in Pretty Guardian Sailor Moon was very similar in appearance to the Cosmic Heart Compact, but it was known as the Heart Moon Brooch.

Trivia
The Sailor Moon S Nakayoshi Anime Album 1 referred to this item as the "Heart Moon Compact" (ハートムーン・コンパクト), while the second album called the item "Cosmic Heart Compact." The toy version released by Bandai used the latter name.