Sardonyx is a trade name for specific Agate, which is Quartz that forms layer by layer in openings in lava rock. Sardonyx is Agate with specifically reddish-brown and black or white bands, usually in incredibly thin layers.

Good for strength, protection, and communication. 

Please note, that each crystal is unique and may have variations in color, shape, and other natural characteristics. The images are only a small representation of our collection.