One happened at Promenade Mall, the other at an east Tulsa Walmart last month.
Officers said Lloyd Clemons, 24, robbed the JCPenney in Promenade Mall on April 27. They say he used a spark plug to crack the glass in the jewelry display case then broke it out with his fist and grabbed handfuls of jewelry.
Police believe Clemons did the same thing at Walmart near 71st and Memorial on April 22.
4/28/2015 Related Story: Tulsa Police Believe Walmart, JC Penney Jewelry Thefts Connected
Police are looking for three other men in connection with the thefts.
Clemons is being held in the Tulsa County jail on complaints of grand larceny and malicious injury to property. Jail record show he has a court appearance set for May 12.