1. Talk the Alchemist on the second floor (ama_in02 61, 27) in the Amatsu Palace (amatsu 85, 235).

2. He offers you a trade of 8 of one type of Elemental Stone for another.

Example:

• 8 Mystic Frozens for 1 Flame Heart.
• 8 Great Nature for 1 Flame Heart.
• 8 Rough Wind for 1 Flame Heart.

Note: Turning elemental stones into Rough Wind is more expensive. It will cost 12 Elemental Stones.

• 12 Great Nature for 1 Rough Wind.
• 12 Flame Heart for 1 Rough Wind.
• 12 Mystic Frozen for 1 Rough Wind.