EmeraldEmeralds are a very rare and valued variety of Beryl. Its vivid green color is due to trace amounts of Chromium or Vanadium. The countries were the most beautiful and precious emeralds are mined have issued postal stamps with emerald gemstones : Colombia, Brazil, Rhodesia (Zimbabwe), Russia. Emerald - Cambodge - 1998 Emerald - Rhodesia - 1964 Emerald - Colombia - 1972 Emerald - Brazil - 1977 Emerald - Russia - 1963 Emerald - Uganda - 1988 Emerald - Israel - 1981 |