Johnny Depp's 5-carat engagement ring to Amber Heard is believed to be worth almost 100,000 dollars.

Depp's new fiancee was spotted showing off her large diamond accessory for the first time as she watched him perform at a private charity event in Anaheim, California on Sunday night.

Celebrity jewellery expert Zaven Ghanimian told EOnline.com that the ring seems to be of 5 carat and assumed that the price would be between 78,000 to 100,000 dollars.

The blonde beauty, who hid the ring from photographers last week, is likely to have helped the actop choose the ring as a source previously revealed that Amber ''calls the shots'' in her relationship with her 'The Rum Diary' co-star, whom she began dating in 2012.