2.5 Carat Diamond Engagement Rings

Create your 2.5 carat engagement ring. Choose from our most loved contemporary and classic ring designs, then discover the most exquisite 2.5ct diamond for your ring.

Most rings shown with 1ct diamond

We’re here to help

We get it, you’ve never done this before.

That’s why we have diamond and design experts on hand, who are here to guide you through every step - from understanding what carat, color, cut and clarity mean, to designing the perfect ring.

About 2.5 Carat Diamond Rings

Create a head-turning look, with a 2.5 carat engagement ring. 2.5 carat diamond rings command attention, with a sizeable diamond guaranteed to radiate intense sparkle. Considerably above the average engagement ring diamond size, a 2.5 carat engagement ring will certainly make an impression. A 2.5 carat ring has become less uncommon with the rise of lab diamonds, which have far lower prices per carat and allow couples to achieve higher carat weights with their budgets.

Measuring around 8.8mm, a round 2.5 carat diamond will provide great finger coverage, giving a full look, with endless scintillation.

Ring Styles

Modern classics

You want your ring design to be timeless, and we get that. Our collection features rings that transcend trends, look great from every angle and are made to last a lifetime.

Try filtering your search by our core engagement ring styles:

Solitaire engagement rings
Diamond band engagement rings
Halo engagement ring
Trilogy engagement rings

Our Diamonds

Ethically sourced & certified

The modern way to buy loose diamonds for your engagement ring, with real 360 videos and advanced filtering. Whether you're looking for a lab-created or natural centre stone, find the perfect loose diamond from our responsibly sourced collection of certified diamonds.

Exquisite Craftsmanship

Made for you

Each Queensmith engagement ring is crafted to order, made just for you and your partner. We have an in-house workshop and production team that meticulously crafts your ring and finesses every detail until it passes our final quality control check. Our quality and finish is a cut above the rest.

As part of our commitment to you, we offer a Lifetime Care Package including manufacturer's warranty, free servicing, free resizing and free cleaning, fully inclusive with every ring made by us.

We've Got You Covered

In London
Certified Diamonds
Free UK
Free Resizing
40 Days

Frequently Asked Questions

Learn About 2.5ct Diamond Rings

How much is a 2.5 carat engagement ring?

A 2.5 carat diamond ring starts at around £8,800 - but the price varies hugely depending on whether you choose a lab diamond or natural diamond.

A good quality 2.5 carat diamond typically costs £8,100 if it’s a loose lab grown diamond, or upwards of £30,000 if it's a loose natural diamond. The total price of a 2.5 carat diamond ring will have the additional cost of the ring setting itself, starting at £700.

You should be aware that diamond prices fluctuate, and this should be used as a guide price accurate at the time of writing.

Is a 2.5 carat engagement ring big?

2.5 carat diamond rings are well above the average engagement ring diamond size. A 2.5ct round diamond measures around 8.8mm in diameter - or a little lengthier if you’re looking at elongated shapes like oval diamonds. A 2.5 carat diamond weighs 500mg regardless of its shape.

What are the measurements of a 2.5ct diamond?

A 2.5ct round diamond has a diameter of around 8.8mm. Elongated shapes, like oval diamonds, tend to look bigger as more of the carat weight is spread across the surface of the diamond - a 2.5ct oval diamond typically measures 11mm, but this can vary depending on how the oval is cut.

Is a 2.5 carat engagement ring too big?

Most would agree a 2.5 carat engagement ring isn’t too big - but, it is certainly bigger than most people’s engagement rings. A 2.5 carat diamond ring will look big, without being too inconvenient or too flashy for most people and their daily lives. Should your profession inhibit you from wearing big jewellery, you may want to consider something a little smaller. Or of course, you can always take it off when it’s inconvenient - just keep it somewhere safe!

Customer Support

Do you have additional questions? No problem, let us help you through the process

Need help choosing the perfect ring?

Get in touch with our experts - we’re on hand to help.

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