The inhabitants of Onnen refer to Malagasi as the Gemstone Islands due to the high concentration of minerals and metals present in the earth. Even rare minerals such as star sapphire are considered common and hard-to-obtain metals like platinum are found in sizable deposits. The Malagasi islands are solely inhabited by the Jauhari tribe, a race of humanoid beings composed of minerals with veins of color running through their bodies like the gemstone springs of the islands they inhabit.