Garnets are a set of closely related minerals forming a group, with gemstones available in almost every hue. Red garnets have a long history, but modern gem buyers can pick from a rich palette of garnet colours: greens, oranges, pinkish oranges, deeply saturated purplish reds and even some blues. Red garnet is one of the most common and widespread of gems. When deciding which garnet to buy, think of garnets in terms of colour. Garnet includes affordable dark red varieties, rare and valuable greens and many colours in between. Garnet is the birthstone for January and the gem for the 2nd Wedding Anniversary.