Magic Knight Rayearth Vol 2

From the Tokyopop edition

Until recently, the only time magic entered into the lives of schoolgirls Hikaru, Umi, and Fuu was when they played video games. But now their lives have become one big fantasy adventure, full of monsters, wizards, and an epic quest! Their mission: to become the legendary Magic Knights and rescue Princess Emeraude from the sinister Zagato. Of course, like any fantasy heroes, the three girls need some killer equipment to face their enemies. With the help of the swordsman Ferio and the bizarre critter Mokona, the girls must cross the monster-infested Forest of Silence to find the legendary mineral Escudo, the only material that can be made into weapons worthy of Magic Knights.

Source: Anime News Network Encyclopedia