Zara Phillips is launching her own line of jewellery.

The Olympic equestrian - who is the granddaughter of Britain's Queen Elizabeth - has revealed she's created a range of pieces inspired by her love of horses in collaboration with Australian jewellery designer John Calleija.

Speaking about working with one of her mother, Princess Anne's favourite designers, Zara is reported by the Daily Mail newspaper as saying: ''I am no jewellery designer but I have had a great time working on this with Calleija and I hope everyone enjoys the collection as much as we have enjoyed putting it together.''

The range includes the Saddle Suite - a line of saddle-shaped rings, earrings and pendants - and the Coronet Suite, which represents the band on a horse's hoof.

It is not yet known how much the jewellery will sell for, however, as each piece is hand-finished in platinum, white, yellow or rose gold and set with white diamonds they're likely to be on the high-end scale.

The 34-year-old royal - who has 16-month-old daughter Mia with her retired rugby star husband Mike Tindall - has previously secured sponsorship deals with Land Rover, Rolex and the clothing company Musto and is believed to earn around £1 million-a-year because of her royal connections.