Oval Diamond Engagement Rings
The oval is one of the most sought-after diamond shapes for an engagement ring — and its popularity continues to grow year on year. Its elongated silhouette creates the impression of a larger stone while slimming and lengthening the finger, giving oval engagement rings a flattering, elegant look on any hand.
Every oval engagement ring in our collection is handcrafted individually in platinum or 18ct gold, set with a certified lab-grown or natural diamond. Browse our designs below and use the configurator to see live pricing for your preferred metal and carat weight.
The History of the Oval Cut Diamond
The oval brilliant cut diamond was created in 1957 by Lazare Kaplan, a Russian-born diamond cutter widely regarded as one of the most important figures in the history of the diamond industry. Kaplan adapted the facet pattern of the round brilliant cut into an elongated form, producing a diamond that delivered the same fire and brilliance but with a distinctly different silhouette on the finger.
Before Kaplan’s innovation, elongated diamonds were limited to shapes like the marquise and navette cuts — beautiful in their own right, but neither offered the same symmetrical balance of sparkle and spread that the oval achieved. Kaplan’s oval cut changed what was possible, and it quickly became one of the most desirable shapes in fine jewellery.
In recent years, the oval cut diamond has seen an extraordinary surge in popularity. What was once considered an alternative choice has become one of the most requested shapes worldwide, driven by its flattering proportions and the way it maximises visual size for a given carat weight. For many people choosing an oval diamond ring today, it is not a second choice to the round — it is the first.
Why Choose an Oval Engagement Ring?
Oval diamonds are cut with a modified brilliant facet pattern — typically 57 or 58 facets, the same count as a round brilliant. This means an oval diamond ring delivers exceptional brilliance, fire, and scintillation, with the added advantage of an elongated shape that creates a larger visual footprint on the finger.
Because of the way the oval spreads its weight across a longer surface area, a 1 carat oval diamond will face up noticeably larger than a 1 carat round. This makes oval engagement rings one of the smartest choices if presence and visual impact matter to you — you get more diamond for your money without sacrificing sparkle.
The elongated shape also has a slimming, lengthening effect on the finger, which is one of the reasons so many of our customers choose an oval cut engagement ring over other shapes. It is a universally flattering diamond that suits every hand size and finger length.
Are All Oval Diamonds the Same?
No — and this is one of the most important things to understand before choosing an oval diamond ring. Unlike round diamonds, which are cut to standardised ideal proportions, oval diamonds vary significantly in their shape depending on the length-to-width ratio.
A ratio of around 1.35–1.45 gives a classic, balanced oval shape — this is what most people picture when they think of an oval engagement ring. Ratios below 1.30 produce a rounder, stubbier oval that begins to lose the elongated elegance the shape is known for. Ratios above 1.50 create a longer, more slender stone that can look striking but may show more of the bow-tie effect.
The bow tie is a shadow pattern that appears across the centre of many oval cut diamonds — a dark area shaped like a bow tie caused by light leaking through the pavilion rather than reflecting back to your eye. Some degree of bow tie is present in almost every oval diamond, but in a well-cut stone it will be minimal and barely noticeable. In a poorly cut oval, the bow tie can be heavy and distracting, significantly reducing the diamond’s beauty.
This is why we assess every oval diamond individually before setting it. We look at the length-to-width ratio, the bow-tie visibility, the overall light performance, and the symmetry of the stone — not just the numbers on the certificate. If you have a preference for a particular proportion, let us know and we will source the right stone for you.
No Cut Grade — Why Expert Selection Matters
The oval is classified as a fancy shape by the GIA, which means it does not receive a formal cut grade on its diamond report. Unlike a round brilliant, where you can rely on an Excellent cut grade to guarantee strong light performance, choosing an oval requires a trained eye and careful evaluation of the stone’s proportions, symmetry, and light behaviour.
This is where working with a jeweller who understands diamond cutting makes a real difference. We do not simply order oval diamonds by specification — we evaluate each stone visually, checking for bow-tie severity, brilliance balance across the surface, and how the diamond performs in different lighting conditions. Every oval diamond we set in our rings has been individually assessed and approved.
Oval Diamond Sizes: What to Expect
One of the advantages of the oval shape is how generously it faces up relative to its carat weight. Here is how common carat weights translate to approximate measurements:
1 carat oval diamond — approximately 7.7 × 5.7mm. A beautiful size that suits most hands and is one of the most popular choices for a 1 carat oval diamond ring.
1.5 carat oval diamond — approximately 8.5 × 6.2mm. A noticeable step up in presence. A 1.5 carat oval diamond ring offers excellent impact without an enormous leap in price, particularly with lab-grown diamonds.
2 carat oval diamond — approximately 9.5 × 6.8mm. With lab-grown oval diamond rings, a 2 carat oval engagement ring has become one of our most popular choices. The cost-effectiveness of lab-grown diamonds means that what was once a luxury carat weight is now accessible to many more customers.
2.5 carat oval diamond — approximately 10.2 × 7.2mm. A statement size. For those who want real presence on the hand, a 2.5 carat oval diamond ring delivers serious visual impact.
3 carat oval diamond — approximately 10.8 × 7.6mm. At this size, the oval’s elongated shape truly commands attention. We source 3 carat oval diamonds to order — contact us for availability and pricing.
For natural oval diamonds, we find that 1 carat and 1.5 carat are the most popular sizes, balancing beauty with budget. With lab-grown oval engagement rings, customers frequently choose 2 carat or above — taking advantage of the significant cost savings to get a larger, more impactful stone.
Certification: Lab-Grown and Natural Oval Diamonds
Every natural diamond we set is certified by the Gemological Institute of America (GIA), the world’s most respected independent grading authority. Our lab-grown diamonds are certified by either the GIA or the International Gemological Institute (IGI), both of which provide an objective assessment of the diamond’s colour, clarity, and carat weight, along with a unique report number that can be verified online.
Lab-grown oval diamonds are chemically, optically, and physically identical to natural diamonds. They are graded to the same standards and display the same brilliance and fire. The difference is origin — grown in a controlled environment rather than mined from the earth — and price, with lab-grown diamonds typically offering significantly more size and quality for your budget.
Natural oval diamonds carry the romance of geological rarity — each one formed over billions of years deep within the earth. We source natural diamonds to your exact specification with a no-obligation quote, ensuring the proportions, bow-tie visibility, and overall beauty meet our standards before we present the stone to you. Contact us to discuss natural diamond options.
Our Oval Engagement Ring Styles
Each design in our collection is available with an oval diamond. Whether you prefer the clean lines of an oval solitaire engagement ring, the subtle detail of an oval hidden halo engagement ring, the sparkle of an oval halo setting, or the character of a vintage oval engagement ring, you can configure any of our rings with an oval centre stone. Select a design above to start building your ring, or book a consultation to discuss your perfect oval engagement ring.
Frequently Asked Questions
Are all oval diamonds the same shape?
No. Oval diamonds vary depending on their length-to-width ratio. A ratio of 1.35–1.45 gives a classic oval shape, while lower ratios produce a rounder stone and higher ratios create a longer, more slender oval. The ratio you choose is a matter of personal preference — we source each oval diamond individually and can find your preferred proportion.
Do oval diamonds sparkle the same as round diamonds?
Oval diamonds are cut with a modified brilliant facet pattern — the same type of faceting used in a round brilliant — so they produce excellent fire, brilliance, and scintillation. The sparkle is comparable, though the pattern differs slightly because of the elongated shape. A well-cut oval diamond will sparkle beautifully, but unlike a round, the oval does not receive a GIA diamonds cut grade, so expert selection is important to ensure strong light performance.
How popular are oval cut engagement rings?
Oval engagement rings are one of the fastest-growing choices in the UK and worldwide. The shape suits every setting style — from oval solitaire engagement rings to hidden halo oval engagement rings, three stone oval engagement rings, and vintage oval engagement rings. Its versatility and flattering proportions have made it one of our most requested shapes, rivalling the round brilliant in popularity.
What size oval diamond ring would suit best?
It depends on your budget and preference. With lab-grown oval diamond rings, the cost-effectiveness means that 2 carat oval engagement rings and 2.5 carat oval diamond rings are very popular — sizes that would be significantly more expensive in natural diamonds. For those looking at natural oval diamonds, a 1 carat oval diamond ring or 1.5 carat oval diamond ring may be more affordable while still offering beautiful presence on the finger. The elongated shape means every oval faces up larger than its carat weight suggests.
What is the bow-tie effect in an oval diamond?
The bow tie is a dark shadow that can appear across the centre of an oval diamond, caused by light leaking through the pavilion. Almost all oval diamonds show some degree of bow tie, but in a well-cut stone it is minimal and adds character rather than detracting from beauty. A heavy, distracting bow tie is a sign of poor cutting. We evaluate every oval diamond for bow-tie severity before setting it.
Is an oval diamond more expensive than a round diamond?
Oval diamonds are typically less expensive than round diamonds of the same carat weight because less rough material is wasted during cutting and because the round commands a premium due to its higher demand. This price difference means you can often get a larger oval for the same budget as a smaller round — making oval engagement rings an excellent value choice.
What is the difference between lab-grown and natural oval diamonds?
They are identical in every physical and optical property — same hardness, same brilliance, same fire. The difference is origin: lab-grown diamonds are created in a controlled environment, natural diamonds are mined from the earth. Natural diamonds are GIA certified, while lab-grown diamonds are certified by either the GIA or IGI. Lab-grown oval diamonds typically cost significantly less, which is why many customers choose a larger carat weight in lab-grown than they would in natural.
What metal suits an oval engagement ring best?
Oval diamonds look stunning in every metal. Platinum and 18ct white gold offer a classic, contemporary look. 18ct yellow gold oval engagement rings have seen a surge in popularity, adding warmth and a vintage feel. 18ct rose gold gives a romantic, modern aesthetic. All our oval engagement rings are available in your choice of metal — use the configurator on any product page to see how each option looks and is priced.