4 Carat Diamond Ring

Design the Ideal 4 Carat Diamond Ring - Explore our popular and modern-classic ring styles to find the perfect 4 carat diamond that completes your vision.

Scroll through our diamond rings designs to find your dream 4ct diamond engagement ring. You can use the filters on the left to navigate through the options we have available.

Search through our diamond inventory, featuring over 100,000 natural loose diamonds and lab-gown diamonds, meaning you can find the perfect diamond for your ring, no matter your budget.

All our loose diamonds are available to view in our London Mayfair showroom. Our workshop is located in Hatton Garden, and all our jewellery is handmade in-house. Simply book an appointment or call us now!

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Exploring 4 Carat Diamond Rings

Rings featuring a 4 carat diamond stand out magnificently, offering a substantial and visually impressive gem. The impact of a 4 carat diamond on an engagement ring varies with the design - a solitaire setting might present a more subtle elegance, while a halo setting can create a more striking and bold appearance.

Engagement rings with a 4 carat diamond are slightly larger than the average size and have gained popularity, especially with the rise of lab-grown diamonds which are more affordable per carat. The dimensions of a round 4 carat diamond are typically about 10mm, and for elongated shapes like an oval diamond, it's closer to 12-13mm.

Contemporary yet timeless designs
Ring Styles

Contemporary yet timeless designs.

You're aiming for a ring that never goes out of style, and we totally understand. In our collection, you'll find rings that go beyond fleeting fashions, look amazing from all sides, and are crafted to endure for years to come.

Filter your search by our best engagement ring styles:

Our Diamonds

Certified & Ethically sourced

Discover the contemporary method for selecting loose diamonds for your engagement ring, featuring authentic 360-degree videos and sophisticated search filters. Whether you seek a synthetic or natural centerpiece, explore our meticulously curated selection of certified diamonds, all responsibly sourced to ensure quality and integrity.

How Do Lab-created Diamonds Differ From Natural Diamonds
Handmade for you
Outstanding Quality

Handmade for you

At Reve Diamonds, we create engagement rings tailored specifically for you and your significant other, with every piece made to order. Our in-house workshop and skilled production team dedicate themselves to meticulously crafting your ring, paying close attention to every detail until it meets our stringent quality control standards. Our craftsmanship and finish stand out, offering unparalleled excellence. Included with every ring we make is a comprehensive package: a manufacturer's warranty, complimentary servicing, free resizing, and lifetime cleaning, all part of our commitment to you. Additionally, we provide a Lifetime Care Package, ensuring ongoing support and care for your special piece.

Frequently Asked Questions

Learn About 4ct Diamond Rings

Customer Support

Have more questions? Don't worry, we're here to assist you throughout the process.

How much does a 4 carat diamond ring cost?

A 4-carat diamond ring from Reve Diamonds, featuring white colour and good clarity, such as a Round lab-grown F VS2, starts at approximately £4,500. However, the price can vary significantly depending on whether you opt for a lab-grown or a natural diamond. For instance, a similar ring with a natural diamond could cost between £60,000 and £80,000.

It's important to note that fancy shapes other than round diamonds, such as Cushion, Oval, Pear, Radiant, etc., tend to be more affordable for the same colour, clarity, and carat size.

>Be aware that diamond prices are subject to fluctuations due to the global diamond market trading in US Dollars. Therefore, the prices mentioned above should be considered as guide prices, accurate at the time of writing.

How big is a 4ct diamond in mm?

A round 4-carat diamond typically measures about 10.5mm in diameter. There might be slight variations based on the diamond's cut proportions, but this measurement can generally be used as a rough guide to envision the size of a 4ct diamond on your finger. Elongated shapes, such as oval diamonds, tend to look larger because the carat weight is spread over a greater surface area.

How big is a 4ct pear diamond in mm?

The size of a 4-carat pear-shaped diamond can vary slightly depending on its cut and length-to-width ratio. On average, a 4-carat pear diamond typically measures around 14mm in length and 9mm in width. However, these dimensions can vary slightly based on the diamond's specific proportions and cut quality.

Is a 4 carat engagement ring too big?

Whether a 4-carat engagement ring is considered "too big" depends on several factors, including personal preference, lifestyle, and the size of the wearer's hand.

Here are some points to consider:

Personal Preference: Some people prefer larger, more noticeable rings, while others might find a 4-carat diamond too ostentatious or impractical for daily wear.

Hand and Finger Size: On smaller hands or fingers, a 4-carat diamond might look more prominent, whereas on larger hands, it might appear more proportionate.

Lifestyle and Comfort: For those who lead an active lifestyle or do a lot of work with their hands, a large ring might be impractical or uncomfortable.

Social and Cultural Context: In some social or professional circles, a large diamond ring might be commonplace, while in others, it could be seen as overly extravagant.

Ultimately, the "right" size for an engagement ring is a very personal decision and should be based on what feels right for the individual or couple, considering all these factors.

How popular are 4ct engagement rings?

Approximately 3% of individuals opt for a 4-carat engagement ring. This percentage has seen a notable increase due to the availability of lab-grown diamonds, which provide a more substantial carat weight at a lower price point. In contrast, less than 0.1% of engagement rings with natural diamonds feature a 4-carat stone.

Customer Support

Have more questions? Don't worry, we're here to assist you throughout the process.

Book a 1-on-1 Consultation with a Diamond Jewellery Expert in London

Purchasing a piece of diamond jewellery is a big decision, and we understand that you want to make sure you are making the right choice. That's why we offer virtual and in-person consultations to help you make an informed decision.

Our team of experienced design consultants can connect with you remotely and guide you through the process. They will answer any questions and help you find the perfect piece of jewellery that suits your style and budget.

>Book a 1-on-1 Consultation with a Diamond Jewellery Expert in London