ASK TONY: How could Saga slash the true value of our stolen jewellery?

We suffered a burglary so made a claim on our Saga home insurance. We are unhappy with the valuation of a gold eternity ring with rubies and diamonds, valued at £2,500 by a jeweller in 2008. https://www.dailymail.co.uk/money/experts/article-8835563/ASK-TONY-Saga-slash-true-value-stolen-jewellery.html?ns_mchannel=rss&ns_campaign=1490&ito=1490