Au Chakra 2.0 – Polished black onyx in 6mm diameter, stringed with 2 stunning sapphire blue color Swarovski crystals and surrounded with another 7 various color Swarovski crystals at the back to give this black bracelet with fun colors. Black Onyx is a great stone for self-protection and provides strength and support during difficult circumstances. Black Onyx is a soothing stone said to alleviate fears and worries and to help you feel comfortable within yourself and in your surroundings. It is also believed to promote stamina and vigour and to encourage the making of wise decision.