Spessartine Garnet is an orange to a red-brown gemstone that belongs to the large and varied Garnet species of gems. Spessartine Garnet was not often seen in jewelry until deposits were mined in Namibia and Mozambique in the 1990's, Spessartine with intense yellow-orange color is often traded as "Mandarin Garnet." Mandarin Garnet is famed for its fiery orange color and its wonderful brilliance.