Jericho Diamond Mine Jericho Diamond Mine The Jericho Diamond Mine is a dormant diamond mine located in Canada's Nunavut territory. Jericho is Nunavut’s first and only diamond mine. It is located northeast of Yellowknife, Northwest Territories and is accessible by air all year and by winter road from Yellowknife. The project was mined from 2006 to 2008, and produced of diamonds from of kimberlite mined from the open pit operation. Over $200 million was invested in the development of the Jericho operations including the construction of a per day diamond recovery plant, maintenance facility, fuel farm, and offices and accommodation for 225 personnel.
Williamson diamond mine years of operation, average ore grade was about per hundred tons (60 mg/t); in the first few years of full operation grades were as high as per hundred tons (124 mg/t), or 10 times the ore realized today. Production in the 1950s and 1960s was usually between 500,000 and 750,000 carats (100 and 150 kg) per year; the peak year of production was 1966, when 924,984 carats (185 kg) were produced. Today production levels for all Williamson mine diamond recovery activities is about 300,000 carats (60 kg) per year. Notable stones produced at the Williamson mine include the Williamson pink