Blue Diamond is a census-designated place (CDP) in Clark County, Nevada, United States. The population was 290 at the 2010 census.
The town includes a park, city pool, library, elementary school, event hall, church, and mercantile / gas station. The mercantile (general store) was built in 1942 and originally sold household staples and sundries to residents who were mostly miners at the Blue Diamond Mine. The store has maintained its original external look. Walls inside the store showcase many of the town's historical photos, courtesy of the Blue Diamond Historical Society, a 501c3 all-volunteer organization.