What does the trade term "Zambian" refer to in emeralds?

The term "Zambian" in reference to emeralds specifically denotes those emeralds that originate from Zambia, which is one of the key sources of emeralds in the world. Zambian emeralds are known for exhibiting a more bluish-green hue and often possess a darker tone compared to Colombian emeralds. This distinct coloration results from the specific mineral content within the Zambian deposits, particularly the presence of chromium and vanadium, which contribute to their unique appearance.

In contrast, emeralds from other regions, such as Colombia, tend to be characterized by a brighter, more vivid green color without the blue undertones that are prevalent in Zambian stones. This distinction is significant for gemologists and jewelers when assessing gem quality and determining value based on color characteristics. The recognition of Zambian emeralds facilitates better understanding and communication within the gemstone trade regarding their unique attributes.