About Ruby by Emylee Worn by passionate women with a flair for the dramatic, ruby is the gem of courage and emotion. Its fiery brilliance attracts the eye and quickens the pulse. In legend, ruby is the gem of the heart with the power to kindle the flame of desire. The ultimate red gem, ruby has been the world's most valued gemstone for most of recorded history. According to the Bible, only wisdom and virtuous women are more precious. Named from ruber, the Latin word for red, ruby is the epitome of the boldest of colors. Burning with an unquenchable fire, ruby has long been a symbol of undying love. Wear ruby to add life to classic neutrals or Art Deco flair to graphic black and white. Ruby is the birthstone for July, the fifteenth and fortieth anniversary gem, and the zodiac gem for the sign of Cancer. When buying a ruby, color is the most important value factor. That's why Gemvara's rubies are a pure vivid red with no overtones. Before their final polish, most rubies are heated almost to 2,000 degrees in order to intensify the red color and improve clarity. Heat enhancement is stable, does not require special care, and does not reduce the stone's value. Ruby, like sapphire, is the mineral corundum, a crystalline form of aluminum oxide. Corundum has a hardness of 9 on the Mohs scale and is also extremely tough: in its common form, it is used to polish other gems. As a result, rubies are durable and suitable for everyday wear. Clean with mild dish soap: use a toothbrush to scrub behind the stone where dust can collect.