What is a heart cut diamond?
By Jared James · Last updated 21 May 2026
Definition
A heart cut diamond is a modified brilliant cut shaped like a heart, with a rounded arch divided by a cleft at the top and coming to a point at the base. Getting the cut right requires real skill because the two lobes need to be symmetrical and the cleft well-defined, and any imbalance shows immediately. Heart cuts suit pendants and earrings especially well, where the shape reads clearly, though they work in rings too when sized generously enough for the shape to be visible.
Frequently asked questions
- How big should a heart cut diamond be so the shape shows clearly?
- Most jewellers recommend at least 0.50 carats for a heart cut, and ideally above 0.75 carats, so the shape is recognisable to the eye. Smaller heart cuts can look more round than heart-shaped once set in a ring, though they work well as pendants where the stone hangs freely.
- What is the difference between hearts and arrows and a heart cut?
- These are two different things. A heart cut refers to the external silhouette of the diamond, shaped like a heart. Hearts and arrows is a pattern of optical reflections seen inside a well-cut round brilliant when viewed through a special scope, and it has nothing to do with the heart cut shape.
- Are heart cut diamonds a good choice for an engagement ring?
- They are a meaningful and personal choice, particularly for someone who loves the romantic symbolism. The trade-off is that the cut requires careful proportions to look its best, so it pays to compare a few stones and check that the two lobes are even and the point is sharp.
Designing a ring
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Tell us what you have in mind, even if it is only a budget and a piece of jewellery type, and we will help you weigh up the options. We reply to every enquiry, usually within one business day.
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