The trapezoidal freeforms of Sardonyx have a size of 28-32 x 25mm and a polished surface. The whole gemstone strand is about 40cm long.
Stone healing science appreciates the effect of Sardonyx when sincerity and strength of character are required. The mineral can refine perception and assist in processing impressions.
The red-brown part of Sardonyx is also called Sard. The name Sardonyx, like the mineral itself, is composed of the black-white Onyx and the orange-brown Sard; the spelling Sardonix is therefore not correct.