Size of the donut made of Sardonyx: 4cm.
Sardonyx is used in gemstone medicine to strengthen the themes of sincerity and virtue. With the help of the mineral can refine perception and support the processing of impressions.
The red-brown part of Sardonyx is also called Sard. The name Sardonyx, like the mineral itself, is composed of the black and white Onyx and the orange-brown Sard; the spelling Sardonix is therefore not correct.