The Shri Yantra, called the “queen of yantras,” (rajayantra) is the symbol of the great divine mother principle, the source of all energy, power, and creativity. Vedic traditions, specifically the Shri Vidya school of tantra, regard the design as the representation of the universe as well as the body of the goddess related to the feminine principle of shakti or energy. Every line, triangle, and lotus petal symbolizes a specific type of shakti.
The outer square represents the earth element. In Vedic sacred geometry, the square corresponds to the earth. The outside square represents mundane emotions, such as anger, fear, and worldly desires. The yogi meditates on the outer square to defeat these disturbing energies. The T-shape structures in the square are considered the gates of the four directions, and the entry points of the yantra.
Himalayan Quartz represents a high spiritual element. Being it is the highest elevation on earth, some believe the veil between heavens and the earth is the thinnest.