Natural Black Striped Agate/Banded Agate Beads Strands, Dyed & Heated, RoundSize: about 4mm in diameter, hole: 0.It is often used in meditation and other spiritual practices, as it can help to calm the mind and promote inner peace.5 inch(39.Spiritual Properties of Agate: Agate is believed to promote stability, balance, and clarity in all aspects of life.