I wandered around Memorial Pillar, and after I placed a Lemonade on the dead Onix's grave, I obtained the TM containing the move Facade from his trainer. I left back to Five Island, and I went ahead and took the ship to Six Island. I arrived at there didn't appear to be much to do, so I headed to Ruin Valley to battle some trainers and to get the Sapphire for Celio's machine. I battled some trainers there, and then I headed into the tall grass to capture wild Pokemon. I encountered a wild Natu and then a wild Yanma, and I captured both. I battled some more trainers around the valley, mostly the Hiker class trainers, and then I got to the Dotted Hole. I solved the mystery there, and I was able to head inside to explore. I fell down the holes and I found the Sapphire, but a Scientist came to get it first. I saved before chasing after him.