Which territory is known for its diamond mines?

The Northwest Territories is known for its diamond mines due to the discovery of significant diamond deposits in the region in the early 1990s. The Ekati and Diavik diamond mines, both located in the Northwest Territories, are among the largest and most important diamond producing mines in North America. This discovery had a substantial impact on the economy of the Northwest Territories, bringing in investment, creating jobs, and contributing to the local and national economy through diamond production. The area's geological characteristics, including the presence of kimberlite pipes, provide the right conditions for the formation of diamonds, making it a prime location for diamond mining. This is what sets the Northwest Territories apart from the other regions listed, which do not have the same level of diamond mining activity or significance.