EVERYTHING YOU NEED TO KNOW ABOUT OVAL DIAMONDS

Oval diamonds, renowned for their exceptional brilliance and fire due to their unique faceting pattern, are a popular choice for engagement rings. The elongated shape of these diamonds not only flatters the wearer's finger by elongating it but also creates the illusion of a larger stone compared to round diamonds of similar carat weight.

Large oval diamond on a platinum band engagement ring

History of oval diamonds

The history of oval diamonds dates back to the late 1950s when diamond cutters experimented with different shapes to maximise brilliance. However, it wasn't until the early 1960s that the modern oval cut was perfected by Lazare Kaplan, a renowned diamond cutter. Since then, oval diamonds have become a sought-after choice for engagement rings and other fine jewellery pieces.

Large oval diamond halo engagement ring in platinum

Choosing the perfect oval diamond

With three generations of diamond expertise, we pride ourselves on guiding our clients through the intricate process of selecting the perfect oval diamond that not only matches their distinct preferences but also complements their individual style. We educate our clients on the importance of considering factors such as ratio and proportions, and appreciating the interplay of light and facets. By providing personalised guidance tailored to each client's preferences, we strive to create a memorable and fulfilling diamond-buying experience with our ethos of informed decisions at the core.

Loose oval diamonds in different carat weights

Length-to-width ratio

Oval diamonds come in various length-to-width ratios, affecting the overall appearance of the stone. Common ratios range from 1.3 to 1.7. Diamonds closer to a 1.3 ratio are rounder and get longer as they get closer to a 1.5 ratio. We like to show our clients a range of oval diamonds of various ratios to allow them to make an informed decision, ensuring they select an oval diamond that perfectly aligns with their desired aesthetic.

Large oval diamond solitaire engagement ring on a skinny yellow gold band

Bowtie effect

Oval diamonds may display a bowtie effect - a dark shadow resembling a bowtie that can appear in the centre of the stone if not expertly cut or aligned. This occurs due to light leakage caused by inefficient reflection from facets. Skilled diamond cutters minimise this effect by optimising proportions and symmetry. Opting for a well-cut oval diamond ensures optimal brilliance and eliminates distractions in its visual appeal.

Two tone metal oval diamond solitaire engagement ring

Ideal depth percentage

The depth percentage of an oval diamond significantly influences its brilliance. Striking the right balance between light reflection and dispersion, an ideal depth percentage enhances the overall beauty of the diamond - a crucial consideration in the selection process.


Oval diamonds are versatile, favoured not only for engagement rings but also for pendants and earrings. When considering an oval diamond, it's essential to prioritise the 4 Cs of diamond quality. Just like with any diamond shape, factors like carat weight, colour, and clarity hold significant importance.

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