The town's history is steeped in the coal industry and was named after the coal mine owned by the Black Diamond Coal Company of California.
Black Diamond is south of Maple Valley, north of Enumclaw, east of Auburn and is west of the Snoqualmie National Forest.HighwaysState Route 169 is the main access highway to Black Diamond. Black Diamond is approximately 28 miles south-west from Bellevue using Interstate 405 to SR 169, the SE Renton/Maple Valley Road. The city is approximately 33 miles from downtown Seattle via Interstate 405 to SR 169.Attractions
- Black Diamond Cemetery built in 1880
- Black Diamond Miners' Cabin built in 1882
- Luigi & Aurora Pagani House built in 189
- Black Diamond Historical Museum in the former train station