Raven and Mana went to all five islands, and knowing that they were interested in the corals, the boatman generously took a scenic route, showing them all the different coloured corals along the way.
"Are the corals connected to the stones you're looking for?" Head Sage Yue asked Mana.
Mana nodded. "If I'm not mistaken, we should find the stones we need at the last island with black corals," she said.
Head Sage Yue frowned. "That would be lava stone then," he said. "The last island was formed a few thousand years ago by volcanic activity. Fortunately, the volcano is no longer active."