Imbued with the hues of a summer sunset, spessartine garnets are the fiery orange variety of garnet, January's official birthstone. The wonderfully versatile garnet comes in a wide array of natural colors, including red, yellow, pink, purple, violet, green, black and brown. The 19.77-carat spessartine garnet shown, above, is part of the Smithsonian's National Gem […]