Single Focal Beads are beads that are somewhat bow in shape and can be seen under intensification. Unluckily, the significance on this bead has not been discovered. The color of this bead starts from the dark lines or in pink, grey color that indicates that undergone with some fire damage at the some point in its history.
Also, it could have been inflamed through the use of bead maker, especially when applying the beautification or perhaps it took place, as the result of resources. These stones are remains strong and appropriate to be worn out. In fact, this is the only bead of its nature, which is rare among carnelians.