Tiger Eye Round Polished Stone Beads

These stones are a natural honey to golden brown color.  Tiger's eye also comes in different color varieties based on the mineral inclusions.  If it is dark blue to grayish blue, it is called hawk's eye.  Sometimes there are intermediate phases between the blue and the gold stones where they occur together.  Enhancements and treatments also may be employed, such as acid washing the stones to remove all color, and heat treatments to change the stone’s color to red. The light scattering and reflecting shimmer that is characteristic of this stone is called chatoyancy, and is caused by very thin silicate crystals formed into parallel arrangements resembling spun fiber.  The substrate volcanic rock cooled and contracted to form narrow gaps or porous voids for the fibers to grow properly into the veins, often resulting in alternating layers of rock and crystal, resembling a ladder or stairway.  Through additional geothermal and tectonic forces, more silica is percolated in between the layers