Justin Bieber buying engagement ring for Selena Gomez?

Lane has supplied engagement rings to stars including Madonna and Britney Spears. "Justin is planning to go through final designs with Neil in the next week. At the moment his favourite idea is a huge, canary yellow, princess-cut diamond surrounded by smaller diamonds and set in white or yellow gold," a source said. Bieber is known to have kept his concert schedule clear for Gomez's 21st birthday. He is planning to fly back home from Boston on July 21, a day before her birthday. Bieber has behaved himself since they reunited last month when she flew to join him on the Scandinavian leg of his 'Believe' world tour.u00a0