viśva-varja

The viśva-vajra is a double vajra shaped like a cross with four equal arms. The vajra itself is a ritual object used in Tibetan Buddhist ceremonies and is a symbol of the Vajrayāna school of Buddhism. In Sanskrit, vajra means both "thunderbolt" and "diamond". Like a thunderbolt, it dispels ignorance, and like a diamond, it is indestructible, symbolizing emptiness.1

The vajra is typically made of brass or bronze, with four prongs at each end curving around a central fifth prong to form a lotus bud shape. A less common variation has nine prongs. In rituals, the vajra is often used with a bell, symbolizing the union of the male principle (action) and the female principle (intelligence) to achieve enlightenment.1