Explore 5 carat lab-grown round cut diamonds, each measuring approximately 11.2mm across, a size natural diamonds rarely reach without an exceptional price tag. At this weight, proportion matters more than the number itself, since two stones of the same carat can look quite different depending on how well they’re cut. Every 5 carat round brilliant cut lab grown diamond at Flawless Fine Jewellery is independently certified by IGI or GIA, and our Hatton Garden experts assess each stone individually before it reaches our collection.
Read moreThere is a common assumption that lab-grown diamonds only make sense at smaller, everyday weights. The opposite is often true. It is at 5 carats and above that the value becomes most striking, because this is exactly where natural diamond pricing stops following a straightforward relationship with quality and becomes governed almost entirely by scarcity. A 5 carat lab-grown round diamond lets you put your budget toward genuinely excellent cut, colour and clarity, rather than toward rarity alone.
The larger viewing area makes individual inspection especially useful at 5ct. Magnified imagery can show whether inclusions sit beneath the table, nearer the perimeter or in positions unlikely to affect normal viewing. The stone’s measurements should also be considered before finalising a setting because basket and prong proportions need to accommodate its actual dimensions.
For a different scale, compare 4 carat lab grown round cut diamonds or see the larger dimensions available among 6 carat lab grown round cut diamonds.
A diamond measuring roughly 11.2mm across, cut to Excellent or Ideal proportions and fully certified by IGI or GIA. Every stone at this weight is individually assessed by our Hatton Garden experts before it is offered to our customer.
It describes how much of the stone’s weight contributes to visible width versus depth. A 5ct lab grown round cut diamond carrying excessive weight underneath can face up smaller than another stone of comparable weight.
Some can be. The larger viewing area makes the position, size and type of inclusions increasingly relevant, which is why magnified imagery can help when comparing individual stones.
Natural diamond pricing above roughly 3 carats is driven mostly by scarcity rather than the cost of production, so prices climb sharply with each additional carat. Lab-grown diamonds are not subject to the same scarcity, so pricing stays far more proportional to size and quality.
It can be, with the right setting. We would recommend a secure mount, typically six claw or bezel, and would discuss your lifestyle during a consultation to advise properly.
Sourcing a stone to this exact specification can take a little longer than smaller carats, and bespoke setting typically adds 5 to 6 weeks once the design is finalised. We will give you a clear timeline once we understand your requirements.
Bespoke pieces at this scale are usually designed around an exact finger size, though resizing is possible in most cases. We would recommend discussing this during your consultation.
Yes, considerably. At this scale, even small deviations in proportion become visible to the naked eye and can noticeably affect brilliance, which is why every 5 carat stone is held to Excellent or Ideal cut standards.
Not at all. It comes down to personal taste rather than convention. Many clients specifically seek this scale for its presence, and a well designed setting will always feel proportionate to the hand it is made for.
Yes. At this level of investment, we would always recommend a private viewing so you can compare stones directly under controlled lighting before making a final decision.