Spanish journalists Esteban Urreiztieta and Eduardo Inda explained in a royal biography that King Felipe chose the engagement ring but sent his brother-in-law, Iñaki Urdangarin, to collect it.

Iñaki Urdangarin went to the jewellery shop Suarez in Barcelona and paid for it.

At that time, the ring reportedly cost him just 3,000 euros.

The problem, the journalists claimed, is that he paid for the ring using his Nóos company credit card.