Diamond is the head of the Stone Clan.
Diamond married the second son of the first elvin king, Ashfall, in an attempt to strengthen the ties between the crown and the Stone Clan. However Stone Clan considers the alliance a failure since it only resulted in a single child, Earth Son. Ashfall's first son was Halo Dust who had two children, Soulful Ember and True Flame. Ashfall's third child, a daughter, is Flame Heart who married Longwind of Wind Clan and had ten children, including Windwolf.