Eternal Moon Article

The Eternal Moon Article was the brooch Serena Tsukino used in the anime in order to transform into Eternal Sailor Moon.

When the 4 Inner Scouts and the 4 Outer Scouts combined their powers and directed them towards the Crisis Moon Compact, it upgraded into the Eternal Moon Article.

Trivia

 * The pink gem on the brooch represents Sailor Moon (or Mini Moon possible). The gems on the left represent the Inner Scouts, while the ones on the right represent the Outer Scouts.