Heart Shaped Diamonds: When They Work and When to Skip
A heart shaped diamond is the most openly romantic of all the shapes: a brilliant-cut stone with two rounded lobes, a cleft in the middle, and a point at the bottom. It sparkles like a round and it says exactly one thing. When it is cut well and set right, it is charming. When it is cut poorly or set too small, it can look like a blob, so the details matter more here than on almost any other shape.
We set heart shapes at our Coquitlam bench for anniversaries, pendants, and the occasional bold engagement ring. Here is when a heart works, when to skip it, and what to check.
What a heart shape is
A heart is essentially a pear with a notch cut into the round end to make two lobes. It uses brilliant faceting, so it throws bright sparkle, and that sparkle helps hide small inclusions. That means you can often choose a mid-range clarity like SI1 and still have an eye-clean stone. Clarity is graded by the GIA on an eleven-point scale from Flawless to I3, and the brilliant facets of a heart are forgiving. Cut quality, though, is where a heart lives or dies, and cut is the biggest driver of beauty, as the American Gem Society notes.
Symmetry is everything
A heart only reads as a heart if it is symmetrical. The two lobes should be the same size and the same roundness, the cleft between them should be sharp and sit dead centre, and the point at the bottom should line up straight below the cleft. Any lean, and the whole stone looks off. Because the GIA does not give fancy shapes a cut grade, you judge this by eye. Set it upright, draw an imaginary line down the middle, and the two halves should mirror each other. A heart can also show a faint bowtie across the centre like a pear does; a light one is fine, a heavy dark one is not.
Go big enough
This is the honest catch with hearts. The shape needs room to read. In a small stone, the lobes and cleft crowd together and the heart gets lost, especially once prongs cover part of the outline. In our experience a heart looks best at roughly half a carat and up, and really comes into its own around a carat or more. If your budget points to a small stone, a heart is usually the wrong shape for it, and a round or oval will look better at that size. For a pendant, where the stone is not fighting a setting, a heart can work a little smaller.
| Feature | Detail |
|---|---|
| Outline | Two lobes, centre cleft, bottom point |
| Cut style | Brilliant, bright sparkle |
| Hides inclusions? | Fairly well, SI1 can work |
| Most important factor | Symmetry of the two lobes |
| Best size | Roughly 0.5 carat and up |
| Setting need | V-prong on the bottom point |
Protect the point
The bottom point is exposed and can chip, so it needs a V-prong, the small metal cap that guards a point on two sides. The two lobes are usually held by prongs at the top. Diamond is a 10 on the Mohs scale, the hardest natural material, as the GIA describes, so with the point protected a heart wears fine day to day. A three or five-prong setting that keeps the cleft open, rather than covering it, shows the shape best. Our settings guide covers the options.
Who a heart suits
A heart suits someone who wants their jewellery to be unmistakably sentimental and is buying enough stone to show the shape clearly. It is a lovely choice for a pendant or a right-hand ring, and a bold one for an engagement ring. If you want something subtle or you are working with a smaller stone, a different shape will serve you better. Bought at the right size and cut symmetrically, though, a heart is genuinely sweet and nobody has to ask what it means.
Key Takeaways
- A heart is a brilliant-cut stone, essentially a pear with a cleft, that sparkles and hides inclusions well.
- Symmetry is everything: even lobes, a centred cleft, and a point that lines up straight below it.
- It needs size to read, roughly half a carat and up, so it is a poor choice for a small stone.
- The bottom point needs a V-prong, and diamond hardness means it wears well once protected.
Frequently Asked Questions
What size should a heart shaped diamond be?
Big enough for the shape to read clearly, which in our experience means roughly half a carat and up, and ideally around a carat for an engagement ring. In small sizes the lobes and cleft crowd together and the heart gets lost under the prongs. For a pendant it can work slightly smaller.
How do you tell if a heart diamond is cut well?
Check the symmetry. The two lobes should match in size and roundness, the cleft should be sharp and centred, and the point should sit directly below it. Look for an even outline and only a faint bowtie across the middle. Because fancy shapes get no GIA cut grade, you judge a heart by eye.
What clarity should I choose for a heart shape?
Often SI1 works. The brilliant faceting scatters light and hides small inclusions, so you usually do not need a high clarity grade. Check the individual stone is eye-clean in person or on video before buying.
Is a heart shaped diamond durable?
Yes, with the point protected. Diamond is a 10 on the Mohs hardness scale, so the stone is very tough. The bottom point is the only vulnerable spot, and a V-prong shields it. With that in place, a heart holds up to everyday wear.
Sources
- GIA — The 4Cs of Diamond Quality (cut and clarity grading)
- GIA — Diamond Description (hardness and properties)
- American Gem Society — Diamond Cut
Data sourced 19 July 2026. If you spot something out of date, tell us and we will update the guide.
Visit Vanhess
We are a family-run studio at 2929 Barnet Highway, Unit 2424 in Coquitlam, with an on-site goldsmith and over a thousand of our own designs. Come see a heart at a size that actually shows the shape, or call us at +1 (604) 653-6449. Browse our engagement rings, or ask us about a heart-shaped pendant.
