The Garnet is the birthstone for January. Garnet got many varieties such as Pyrope, Almandine, Rhodolite, Spessartite, Tsavorite, Demantoid, and Color-Change. Demantoid is a rare and famous green garnet, spessartine (also called spessarite) is an orange garnet, and rhodolite is a beautiful purple-red garnet. Garnets can even exhibit the color-change phenomenon similar to the rare gemstone alexandrite.Colour Change Garnet is one of the very rare and most fascinating gemstones. This garnet changes color like an alexandrite. The color change can be strong and dramatic like the color change of top quality alexandrite.The rarest of color-change garnet is Blue Color-Change Garnet