The birthstone for December is

Answer 1

Decembers birthstone is a Ruby...For thousands of years, the ruby has been

at all, but spinels.)considered one of the most valuable gemstones on Earth. It has everything a precious stone should have: magnificent color, excellent hardness and outstanding brilliance. In addition to that, it is an extremely rare gemstone, especially in its finer qualities. Ruby is the red variety of the mineral corundum, one of the hardest minerals on Earth, of which the sapphire is also a variety. Pure corundum is color less. Slight traces of elements such as chrome, iron, titanium or vanadium are responsible for the color. These gemstones have excellent hardness. On the Mohs scale their score of 9 is second only to that of the diamond. Only red corundum is entitled to be called ruby, all other colors being classified as sapphires. The close relationship between the ruby and the sapphire has only been known since the beginning of the 19 th century. Up to that time, red garnets or spinels were also thought to be rubies. (That, indeed, is why the 'Black Ruby' and the 'Timur Ruby', two of the British Crown Jewels, were so named, when they are not actually rubies