A simple palette with several forms
A black onyx bead strand creates a different visual rhythm from a single larger centerpiece. A ring emphasizes its setting, while a pendant depends on both the stone and chain. Compare the finish, dimensions and any treatment information of the actual item. A symbolic label alone does not establish material composition, quality or suitability for a particular use.
Personal symbolism
In contemporary crystal symbolism, black onyx is associated with strength and steadiness. These are personal or cultural associations. Someone may choose a piece as a reminder of those values, without expecting the material to produce a physical or emotional effect.
Looking at a finished piece
Black pieces can create a strong contrast with gold-tone or silver-tone settings. Compare the polish, setting and dimensions rather than choosing by a symbolic label alone.
Before choosing a piece
Read the stated material, dimensions and construction of the actual item. Keep the care directions for its setting, cord or other components as well as the stone. Store finished pieces so that they do not strike one another, and choose a stable location for decorative objects.