Burma Star Ruby in Red-Purple Oval Cabochon

About Star Ruby

Star ruby is the star-forming variety of ruby, the red gem variety of corundum. Its colour ranges from pinkish red to vivid red and purplish red; some stones are translucent to opaque rather than transparent. The characteristic optical effect is asterism: a sharp, usually six-rayed star that appears to glide across the curved surface when the stone is moved. It is caused mainly by fine, needle-like inclusions of rutile,…