From the Font of Jojii Quest, introduced during the Mirror, Mirror event.
Found at the bottom of the Firebird's Splendor dungeon.
Stone of the Firebird
A well-written note.
As I entered this place I questioned whether I would find the splendor that I sought. There in the darkness of the fire hewn halls I questioned if this place of ash and soot could be the home of something so perfect as the splendor that I sought.
When I saw the rock formation within the lava, I knew that my journey was complete. For atop the stones sat a perfect sphere.
I know that I had found what will become the splendor and focus of the Firebird. My feet lead me to Kara. Where I shall meet another, and my journey will end.