Moonstone

From FlyFF WIki

Moonstones are a rare refining material that can drop from any monster.

Moonstones can be used for:

• Piercing armor.
• Removing jewel piercings from Ultimate weapons.
• Creating Shining Oricalkum
• Summoning Angels (PK clusters only)
• Upgrading Collectors (up to +5)
• Upgrading Jewelry