Sardonyx is a variety of chalcedony. It is a blend of sard (a reddish-brown variety of chalcedony) and onyx. Sardonyx comes from the Greek words sard and onyx meaning “brownish red” and “white stone”.
Sardonyx is a traditional birthstone for August.
Luster: vitreous | Hardness: 6.5-7 | Density: 2.6
Legends & Lore:
- It is believed to help with communication and give elegant speech as well as happiness to couples.