( CNN ) Can a prayer for diamonds actually turn up a gem ? When you 're exploring the fields at Crater of Diamonds State Park in Murfreesboro , Arkansas , the odds are higher than usual . `` Are you going to bless me and let me find a diamond today ? '' That was Susie Clark 's prayer on April 23 , according to the state park service . Soon after , Clark , who is from Evening Shade , Arkansas , saw a 3.69-carat white , teardrop-shaped diamond in the plowed field . Inspired by her prayer , Clark named it the Hallelujah Diamond . She plans to keep it . The diamond , which is the largest found at the park so far this year , is about the size of a pinto bean , says park interpreter Waymon Cox . `` And it 's the largest one found since April 16 , 2014 , when a 6.19-carat white diamond , named the Limitless Diamond , was found at the park , '' he said , according to a park press release . It 's the 122nd diamond found at Crater of Diamonds this year . Visitors get to keep what they find at the state park 's 37.5-acre search field , which is named for an ancient eruption that scattered the area with gems . The area , which became a state park in 1972 , is the only public site in the world where -- for a small fee -- anyone can dig for diamonds and keep them . It 's not clear how much the diamond is worth , and park officials are n't trained to appraise them , according to the park website . But Oklahoman Tara Clymer sold a 3.85-carat diamond she found at the park last year for $ 20,000 . 50 states , 50 spots : Natural wonders . Park staff regularly plow the area to bring more diamonds to the surface for visitors to discover . The 40.23-carat Uncle Sam , the nation 's largest diamond , was found in 1924 , and the `` perfect '' 3.03-carat Strawn-Wagner diamond was found in 1990 . The Strawn-Wagner Diamond was cut in 1997 by the renowned diamond firm Lazare Kaplan International of New York . The now 1.09-carat diamond is on display at the park visitor center . The park stretches for more than 900 acres along the Little Missouri River , but the diamond field is the main attraction . More than 75,000 diamonds have been discovered there since farmer John Huddleston discovered gems on what was then his property in 1906 .
Arkansas planet owns a 3.69-carat diamond in Arkansas national park . Crater of diamonds is the planet 's only public diamond search site .