Angelina Jolie has commissioned an engraved diamond pendant for partner Brad Pitt.
The pendant will be made by luxury jeweller Robert Procop, who is going into business with Jolie for her own range of jewellery, The Style of Jolie.
Procop spoke to The Daily Mail about the engraving on the pendant, saying: "I can't tell you what it says, and you would need a microscope to read it."
He added: "The technology is quite new. The hidden message is lasered on."
The pendant, which is reportedly worth a six-figure sum, is based on Ancient Egyptian amulets that contain hidden messages.