Murfreesboro is a city in Pike County, Arkansas, United States. The population was 1,764 at the 2000 census. The city is the county seat of Pike County. Crater of Diamonds State Park is located just to the south. The "crater" is an eroded lamproite pipe where diamonds were discovered in 1906. 100,000 were found by 1933, and visitors to the park may still take away whatever they can find. Hillary Clinton wore a 4.25 carat (850 mg) yellow diamond known as The "Kahn Canary" Diamond, found at the park in 1977, to the inaugural balls in 1993 and 1997. Also located in Murfreesboro is the 1,000-year-old Ka-Do-Ha Indian Village and museum, which offers a field that can be excavated for authentic arrowheads.