The average claim for a missing diamond has jumped by 33% from £7,618 in 2024 to £10,157 in 2025, according to Aviva. The insurer said it had also recorded a 13% rise in the number of claims for missing diamonds during the same period.

Aviva said diamonds remained the most popular choice for engagement rings, citing research it had commissioned from more than 2,000 people. Almost two-thirds of respondents (63%) had chosen a diamond engagement ring. The next most popular precious stone was a sapphire, chosen by 11% for their engagement ring.

Ann Owen, managing director at Aviva Private Clients, said: “It’s interesting to see how the average value of a claim has increased drastically in recent years.

“Engagement jewellery – whether a ring, bracelet or other treasured piece – carries huge sentimental value, which is why having the right level of cover is so important. In many cases, high-value items can be protected under the valuables section of home insurance, which typically covers loss, theft and damage. However, depending on the value, you may need to list it separately on your policy to make sure it’s fully covered - often for a small additional cost.”