Central decoration of Vasudhara, goddess of wealth, with one head and six arms, surrounded by a circle of lotus petals, the whole in the middle of the walls of the palace with four doors leading to the four corners of the Earth. Outside the palace is the Ashtamangala, the group of eight auspicious Buddhist symbols, the dextrorotatory white conch, the parasol, the pair of fish, the treasure urn, the wheel of law, the banner, the lotus, the endless knot. The whole again surrounded by a circle of lotus petals symbolizing the open state of devotion allowing to enter the palace, then a circle of dorje vajra, or diamond lightning, symbolizing strength and fearlessness and finally a circle of the flames of wisdom, the outermost circle constituted by the purifying fire. The plate under the embossed part containing the charge is in copper and decorated with a double dorje vajra. Diameter: 20 cmIn Tantric Buddhism (vajrayāna), as in other branches of Buddhism, the mandala is a support for meditation .