Garnet is the official birthstone of January. The colour that is most associated with this gemstone is red. However, Garnet refers to a group of gemstone-quality minerals and are found in a variety of different colours. Garnet colours include orange, pink, red and purple-red. Garnet varieties include Pyrope, Rhodolite, Spessartine/Spessartite and Tsavorite among others. Garnet is a gorgeous choice of gemstone for jewellery.