Colombian or Zambian emeralds. Emerald color comes from trace elements formed deep within the earth. Colombian emeralds grow in rare sedimentary deposits and are colored primarily by chromium, with little to no iron present. This is why they are known for their vivid, pure green glow and that unmistakable inner light they seem to carry. Their inclusions are often described as jardin, or garden like, soft and organic, and are considered part of their natural beauty and identity. Zambian emeralds