January Birthstone is Garnet, its color is usual Red, but it could be also green, blue, brown and even yellow. Garnet, among of all birthstones, fits to all ancient sources (such as Jews, Romans, Arabian, Poles, Russian and Italian) as a birthstone for January.
The Siberian Green Garnet is composed of cilicate, calcium, aluminum and chromium. Its color is due to the presence of this last metal in its composition. It comes from the Ural mountains in Russian Siberia. It is the only colored birthstone, except a certain shade of zircon,that is iridescent, like the diamond under gas light. Green garnets are usually very small. One of 33/8 carats is the largest yet known.