Blue color as the focus
Blue apatite is a blue variety within the apatite mineral group. In a polished decorative piece, depth of color and reflected light can be central to its appearance. A darker bead and a lighter translucent-looking piece may make different visual statements even when both are described with the same material name.
Personal symbolism
In contemporary crystal symbolism, blue apatite is associated with expression and curiosity. 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
Look at the depth of blue and the surface finish. Check the setting and care directions for the finished piece instead of assuming that every blue stone has the same durability.
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.