12 MM Matte Black Onyx and Picasso Jasper Bracelet A powerful protection stone, Black Onyx absorbs and transforms negative energy, and helps to prevent the drain of personal energy. ... Black Onyx aids the development of emotional and physical strength and stamina, especially when support is needed during times of stress, confusion or grief. Picasso jasper is said to make for an excellent meditation stone. Some people value Picasso jasper for its ability to renew lost friendships or to help guide during relationship transitions. This stone is said to promote inner clarity and interpretation of one's own thoughts.