Star Ruby, a type of corundum, consists mainly of alumina (Al2O3) and red from chromium (Cr). Naturally chrome-free gems are blue sapphires. Myanmar Mogok Starlight Ruby is the only ruby in the world where there are all ruby origins (Burma, Sri Lanka, Thailand, Australia, China). It is one of the world's five largest treasures, crystal clear, and good luck.
Star ruby can contain a large amount of rutile inclusions. In the plane of the vertical z-axis, the three groups of rutile inclusions intersect with each other at an angle of 60°. After processing into a gemstone, it will show six-pointed starlight. Occasionally, double star light is visible. Two shots of Starlight