Oval Cut Lab Grown Diamonds
Looking for a lab grown oval diamond that’s cut to perfection? Oval is one of the hardest shapes to get right. Our collection spans every carat weight and quality, each stone hand-picked for its beauty and balance to a standard we’d want for ourselves. From the icy brilliance of a D-grade diamond to the warmer, near-colourless tones closer to J — the choice is yours. Since oval cuts naturally mask warmth well, brilliant faceting keeps grades like H or I looking bright and white, offering the best balance of brilliance and value.
Read more
carat
price
color
cut
clarity
polish
symm.
flour.
certificate
depth
table
L:W Ratio
Book a Hatton Garden or Manchester showroom consultation
Book a Hatton Garden or Manchester showroom consultation
Thinking of creating a personalised ring featuring an oval lab grown diamond? Book an appointment today and let us bring your vision to life.
Choose Flawless for designing your ring
Face Up Size Advantage of Oval Lab Diamonds
One of the biggest advantages of oval cut lab grown diamonds is their impressive face up size. Due to the elongated shape and shallow depth, oval cuts often appear larger than round or princess diamonds of the same carat weight. This gives buyers the visual impact of a bigger stone without the added cost. Oval lab created diamonds also create a flattering, lengthening effect on the finger, making them a popular choice for modern engagement rings.
How we check every oval diamond for bow-tie and symmetry
A poorly finished stone can show a dark shadow (called a “bow-tie”) across its centre. That’s why every oval lab grown diamond at Flawless is first examined by our in-house Hatton Garden specialists, who check each stone’s length-to-width ratio, cut precision, polish, and symmetry, making sure both points are sharp and even, the curves flow smoothly without any flat spots, and the stone avoids the dreaded bow-tie effect that can dull its sparkle down the centre. Every diamond is also backed by IGI certification, so you’re only ever choosing from stones we’d recommend ourselves. The elongated shape sets an oval apart from other cuts. It draws the eye down the finger, making the hand look slimmer, and the stone itself appears more spread out than a round diamond of equal weight.
Oval Cut Lab Diamonds - FAQs
What is the ideal length-to-width ratio for oval lab diamonds?
What is the ideal length-to-width ratio for oval lab diamonds?
Most buyers prefer a ratio between 1.35 and 1.50, depending on whether they want a rounder or more elongated look. The right ratio also affects how prominently the bow-tie effect appears.
Are oval lab grown diamonds more affordable than mined ovals?
Are oval lab grown diamonds more affordable than mined ovals?
Yes, lab grown oval diamonds are typically 30–40% more affordable than mined diamonds of the same quality, making them a cost-effective choice without compromising brilliance.
How do I choose the right setting for an oval lab diamond?
How do I choose the right setting for an oval lab diamond?
Oval lab diamonds look stunning in solitaires, halos, and three-stone settings. East–west orientations are popular for a modern twist, while classic prong settings enhance brilliance.
What causes the bow-tie effect in an oval diamond, and can it be avoided?
What causes the bow-tie effect in an oval diamond, and can it be avoided?
The bow-tie is a shadow across the centre of the stone caused by light blockage from the viewer’s own head and shoulders reflecting through the elongated facets. It varies in intensity by stone and is minimised, though rarely eliminated entirely, through precise cut, depth and symmetry.
What carat size should I choose for an oval engagement ring?
What carat size should I choose for an oval engagement ring?
Because the oval already reads larger than a round diamond of equal weight, many buyers find 1–1.5 carats delivers the visual size of a larger round stone. The right size ultimately depends on the setting and finger proportions.
Does an oval diamond suit all finger shapes and hand sizes?
Does an oval diamond suit all finger shapes and hand sizes?
The elongated outline generally elongates the appearance of the finger, which is why it’s a popular choice across most hand shapes, though the right fit is best confirmed against the specific setting and hand.
Can I see how an oval diamond will look in a specific ring design before committing?
Can I see how an oval diamond will look in a specific ring design before committing?
Yes. At Flawless Fine Jewellery, our Hatton Garden team can show you the stone against your chosen design directly, either in person at our London or Manchester showrooms or via video consultation, since ratio, crown height and outline curve all affect how a stone reads in a particular setting.
Do all oval diamonds have some degree of bow-tie, even the well-cut ones?
Do all oval diamonds have some degree of bow-tie, even the well-cut ones?
Most oval diamonds show a slight bow-tie under certain lighting, as it’s a natural result of the elongated shape. A well-cut stone keeps this light and evenly balanced rather than eliminating it entirely.
Why do oval diamonds vary so much in price even at similar carat weights?
Why do oval diamonds vary so much in price even at similar carat weights?
Price differences mainly come from cut quality, symmetry and ratio rather than carat alone, since a well-proportioned oval with minimal bow-tie commands more than a poorly cut stone of the same weight and grade.
Where is the best place to buy a lab grown oval diamond in the UK?
Where is the best place to buy a lab grown oval diamond in the UK?
At Flawless Fine Jewellery, each oval diamond is examined individually by our Hatton Garden team for ratio, symmetry and bow-tie visibility before it’s listed, with viewing available in person at our London or Manchester showrooms, or by video consultation.
Need help choosing ?
We're happy to help