Note: 1. Starlight rays move with the Angle of illumination and are not fixed.

          2. Clear starlight can be seen under flashlight or direct light.

When a gem has a large number of tiny minerals called rutile growing inside it, the top of the stone that is polished into a convex shape will show six lines of star light. Such gems are called astral gems. Its value depends on the gem's six star lines intersecting at the center of the gem. Complete and bright star lines. With the rotation of light and fingers, the star line moves flexibly. A Red Color Star Ruby having the effect of starlight. Usually opaque, because contain 120 ° the intersection of three groups of parallel arrangement of rutile fibrous inclusions, so when the vertical type gem crystal c axis processing into a surface, there are six shooting stars visible.