Treasure in a dream often symbolizes hidden potential -- a talent, opportunity, or sense of self-worth you haven't fully uncovered yet. Searching without finding it can reflect a reward that still feels out of reach, while discovering it often names a strength in yourself you're just beginning to recognize.
Consider what things the Planets perform not by their Aspects, and observe if they do them not by their Antisions, for the Antisions have power, and are not to be enumerated amongst Aspects. - William Lilly (1602.-1681.)