Rubies vary in color and brighten in strong light.
Surya represents the king of the solar system in Jyotish. It also represents authority, power, Self, father, body and health. Depending on the placement of Surya in your birth chart, the wearing of a ruby may be very auspicious in strengthening the positive influences of Surya. Surya, the sun acts like the thalamus in the human physiology. The sun is the central focal point in the solar system as is the thalamus in our body.