Board Thread:News and Announcements/@comment-26164656-20150616000318/@comment-508329-20150618234756

The Green Diamond theory is based on the interlocking triangle symbol on the floor of Peridot's warship. There's a small green triangle where the yellow, white and blue triangles intersect. She is speculated to be a fusion between Yellow Diamond, White Diamond and Blue Diamond. (Only Yellow Diamond has been officially confirmed.)