Indigo is linked with Angelite - a precious stone found only in Peru. This stone has a link with the angelic kingdoms. Indigo is mystery and the unexpected. Indigo is secrets. The person drawn to indigo tends to be highly efficient and capable of enormous determination.
Indigo is about total empathy.
Indigo is seen in the auras of those people known as catalysts, who speed the spiritual and psychical development of everyone they touch. Indigo is lightning and quicksilver, ever-changing and transforming. Indigo is inspiration. This ray removes fear. Purifies the blood stream.