A teenager was robbed of his phone and gold chain as he walked down a street.
The 16-year-old was attacked outside the cemetery in Shenley Road, Borehamwood, at 2.30pm on Friday, March 21.
Paul Tillett, of Gascoigne Close, South Mimms and a 16-year-old boy have been arrested and charged with robbery.
Police are appealing for witnesses to come forward.
Anyone with information is asked to call the police on 101.