"David's a happy bunny," the Daily Star quoted a pal, as saying.
"The gems were bought as a bit of a laugh but David and Victoria have certainly been smiling a lot since," the pal added.
The 33-year-old footie icon was recently spotted wearing the necklace on his wrist at the opening of Gordon Ramsay's new restaurant in LA
The jewellery, made by US firm Energy Muse, comes with a scroll promising the wearer will have better sex, health and work success - if they chant every day.
The mystical necklaces and bracelets are a hit among Hollywood celebs including singer Courtney Love, model Heidi Klum and 'Sex And The City' actress Kristin Davis.