Emerald and diamond three-stone ring. Colombia has been the source of the world’s best emeralds for thousands of years, but production was relatively localised until the 16^th century. Colombian emeralds form differently from emeralds found in other deposits, and as a result produce stones of particularly vivid colour and distinctive, beautiful patterns of inclusions. These well-matched Colombian emeralds are a fresh, light green, with excellent clarity and only minor traditional clarity enhancement with oil. The traditional three stone design groups these well-matched emeralds together to create a band of colour across the finger, accented with brilliant-cut diamonds and set in buttery yellow gold, with hand-chased scroll work at the sides.