Rubies have always been treasured for their regal beauty. The ruby is the red variety of the corundum family, which includes sapphire, and is the most valuable. Traces of chromium found in the ruby's crystal structure cause this blazing gem's orangey to purplish red hue. Fine quality rubies are extremely rare. The color of the gem dictates its value.


In their rough state, rubies contain various imperfections. They may be in a form of color impurities and thin mineral inclusions called needles. Gemol...
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