Sardonyx is a variety of onyx that typically comes in shades of red (the word "sard" means "red"). Our selection of semiprecious sardonyx beads are dark, and mainly display shades of black with bands, stripes and swirls of cream, and hints of dark brown and dark red. Some look very similar to black onyx or black banded agate.
Onyx is purported to help eliminate apathy, stress, and negative thinking. It is also said to sharpen wits, increase concentration, and prevent absentmindedness. Onyx is sometimes worn to help public speaking since some people believe it makes the wearer more eloquent.
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