What is the name of one of Colombia's traditional emerald mines?

Coscuez is indeed one of Colombia's traditional emerald mines, recognized for its rich history and significance in the global emerald market. This mine, located in the Boyacá department, is part of a region known for producing some of the finest quality emeralds in the world. The emeralds sourced from Coscuez are characterized by their vibrant green color and excellent clarity, making them highly sought after by jewelers and collectors alike.

The historical importance of Coscuez is also noteworthy; it has been operational for centuries and has contributed significantly to Colombia's reputation as a leading emerald producer. The mining techniques, cultural practices, and local lore associated with Coscuez add to the mystique that surrounds Colombian emeralds. Other mines or regions mentioned in the choices are notable for different types of gemstones or located in other countries, which does not directly relate to Colombia's traditional emerald mining heritage.