Eiichi Sato peers through a gemologist's loupe and shines a lamp down onto the small pink-red stone that glistens against the black felt cloth below. "Take a look," he urges. "It's pretty cool."

It's barely noticeable at first, but once the eyes adjust and the angles and light align, somewhere deep inside the gemstone can be seen a sparkling six-pointed star.

It is, indeed, pretty dope.