A brass diya is considered highly auspicious because it represents the eternal flame of divinity and the victory of light over darkness. In Hindu belief, brass is a sacred metal that retains purity and radiates positive vibrations, making it the most suitable material for diyas. Lighting a brass diya during puja or festivals not only enhances the sanctity of the ritual but also invites peace, prosperity, and harmony into one’s home. The golden glow of brass intensifies the flame, creating a spiritually uplifting atmosphere that connects devotees with divine energy.