Star Ruby - Eternal Gemstone

By: Harshil Zaveri What are Star Rubies? Star Rubies are a rare variety of the gemstone Ruby. These magnificent gems display a sharp six-rayed star which seems to glide and shimmer magically across the surface of the gem when the latter is moved. This is caused due to an optical phenomenon known as " Asterism ". The star is best visible when the star ruby is seen in a single light source such as sunlight and spotlight. What causes the Star-Effect? Star-effect or " asterism " is caused by the dense inclusions of tiny fibers of rutile (also known as " silk "). The stars are caused by the light reflecting from needle-like inclusions of rutile aligned perpendicular to the rays of the star. ...

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