Agate, Black Agate BraceletResilience and Prosperity Black agate is also said to have multiple symbolisms. While known to promote self confidence and courage, the stone is also symbolic of resilience and prosperity. Moreover, it represents positivity, peace and balance. Black Agate protects from danger, gives power against forces of darkness, and brings emotions into equilibrium. Agate can harmonise positive and negative forces, alleviate bad dreams and can give courage,