The ruby comes from the Latin name “Ruber” (Red) and it is the hardest gemstone after diamond, with sapphire, because as we have already discussed, rubies and sapphires are from the corundum. The substances that give the red hue are chromium and iron. The most prized color is commonly called “pigeon blood” pure intense red. Prices of some rubies can exceed that of diamonds.
The main ruby mines are in Burma (Rubies Mogok, the best known), Thailand (Rubies Siam, darker) and Sri Lanka (high purity and bright colors) as well as in Kenya, Tanzania, Madagascar, Malawi and Vietnam. Ruby inclusions allow you to know its origin and sometimes the site.