Ruri Yoneda

米田 瑠璃 / 二代目ラピス・ラズリーヌ / ブルー・コメット

She is part of Team Bell and the only one who understands Melville's speech. Her magic is to teleport using gems. [Spoiler] She is actually the Second Lapis Lazuline and her previous name is Blue Comet. [/Spoiler] (Source: Mahou Shoujo Ikusei Keikaku Wikia)