Jack Pearadin and Doug Nelsen found a 1.73-carat diamond after nearly a year of searching the park's field.
The Rocketboys, whose "melodic rock" has been featured on television's "One Tree Hill" and "Glee," come to Stickyz, 8:30 p.m., $8-$10. DJ Lucio Pro, who makes "hip-hop about video games and having fun," joins DJ Courier for a spin at Maxine's in Hot Springs, 9 p.m., free.
There's a full-fledged castle in West Little Rock, and you can tour it for free: the Arkansas Historic Preservation Program hosts a tour of the Dr. Clarence W. Koch House as part of its "Sandwiching in History" series, 6601 Stagecoach Road, noon. Dance band Cosmocean releases its self-titled debut EP with jazz-folk strummer Amber Wilcox opening the show, 10 p.m., King's Live Music, Conway. Irving Berlin's "Annie Get Your Gun" opens at the Community Theater of Little Rock, 7:30 p.m. Fri.-Sat., 2 p.m. Sun., $8-$18. Vintage vendors from across the state sprawl across the Arkansas State Fairgrounds through June 5 for Vintage Market Days, 10 a.m., $5-$10. Big Still River releases its album "Ain't Dead Yet" at Four Quarter Bar in Argenta, 9 p.m. Delta rockers The Federalis join Me Like Bees and Nothing for Breakfast, Maxine's, Hot Springs, 9 p.m., $7.
Butterfly and Irie Soul host an R&B and reggae "get down party" at Next Bistro and Bar, 8:30 p.m., $10-$15. Central Arkansas Roller Derby (CARD) and Girls Rollin' in the South (GRITS) square off against Joplin's Mo-Kan skaters in a roller derby doubleheader, 2 p.m., Conway Expo Center and Fairgrounds, $2-$15. Funk-driven zydeco band Dikki Du and the Zydeco Krewe tears it up at Maxine's, 9 p.m., $7. Hot Springs' Bathhouse Row holds the 11th annual Stueart Pennington Running of the Tubs, a parade in which teams outfitted in bathwear race bathtubs on wheels (judged at a party the night before) down Central Avenue, 9:30 a.m., free. The Ecumenical Buddhist Society of Little Rock hosts an overnight trip to Magnolia Grove Monastery in Batesville, Miss., for a "Day of Mindfulness," $30-$50 suggested donation. Barroom country singer Jason James joins songstress Bonnie Montgomery at the White Water Tavern, 10 p.m., $7. The raucous Stephen Neeper and the Wild Hearts howl at Stickyz, 9 pm, $5. Retired biology teacher Shirley Pratt hosts an educational hike titled "Historical Uses of Edible and Medical Plants," Faulkner County Library, Conway, 10 a.m., free.
One-man band Paul Morphis sings, strums, taps and whistles at White Water, 9:30 p.m., donations accepted.