Star Ruby

Star Rubies are beautiful gemstones that display a six-ray star that seems to glide magically across the surface of the gem when the latter is moved. This six-ray star is caused due to an optical phenomena known as "Asterism". The term "Asterism" is derived from the Greek word "aster", which means star, so asterism is commonly referred to as "star" or "star-effect". In simple words, asterism is a star-shaped light effect across the surface of gems. Other popular gemstones that display asterism are Star Sapphire, Star Rose Quartz, Star Garnet, Star Diopside, Star Moonstone, Star Spinel and Star Opal.