There’s a good reason why Kate Middleton isn’t wearing her engagement ring anymore

You may have noticed that Kate Middleton is no longer wearing the iconic engagement ring we've all gotten so used to - but as it turns out, there's a very understandable reason why.

Royal fans first cottoned on to the jewellery change when the Princess and Prince of Wales posted a video featuring themselves, alongside many other well-known names to congratulate Team GB on their Olympics performances.

Kate could be seen brandishing a much more understated band on her wedding finger, rather than the sapphire engagement ring that once belonged to William's mum, Princess Diana.

Like many others, Kate has opted to wear her engagement ring alongside her wedding band ever since William proposed.

An expert has weighed in to state it's likely linked to Kate's ongoing cancer treatment.

Oncology pharmacist Dazhi Liu told HELLO!: "During cancer treatment, there are several practical reasons why someone might need to take off their rings. Chemotherapy can cause fluid retention in the hands, which might make rings tight and difficult."

The pharmacist, who is also a medical contributor for Drugwatch, added: "Metal rings could interfere with the radiation therapy and cause issues such as burns on the skin around the ring.

Kate Middleton's engagement ring is an attention-grabber. (Max Mumby/Indigo/Getty Images)

She went on to add that it may help avoid infection, stating: "Since patients are at high risk of getting infections during chemotherapy, removing rings can help prevent skin infections.

"Overall, taking off rings during cancer treatment can help avoid these potential problems."

While it initially surprised many, the ring Kate is wearing now is clearly just as beautiful - and has left many people wanting to wear something similar.

Maxwell Stone, a jewellery expert at Steven Stone, gave Tyla some further insight into the ring.

The new ring is much more understated. (X/@KensingtonRoyal)

He said: "During their university days, William gave Kate a promise ring, and though it’s hard to be certain, recent footage of the royal couple suggests she may be wearing this sentimental piece again."

He added: "The ring is set on a rose gold Victorian band, featuring two garnets - Kate’s birthstone - and pearls to represent William’s June birthstone. Unlike Kate’s 12-carat engagement ring - which she typically removes during physical activities, sports, or any situation where there’s an increased risk of damage or loss - this ring is more practical for daily wear."

Offering some insight into how much a promise ring like that could set you back, he added: "While its sentimental value is priceless, I would estimate the monetary worth of Kate’s promise ring to be around £1,500."