Heart Shaped Engagement Rings
A heart is the most demanding shape to cut and the least forgiving to buy badly, and it comes with a floor: GIA advises that it works best at half a carat and above, because below that the outline stops reading as a heart at all. Chosen well it is unmistakable. Chosen carelessly it is the shape people mean when they say a ring looks cheap.
The heart in brief
- Cut style
- Brilliant cut. A heart brilliant, faceted for sparkle. Like most fancy shapes it has no standard facet count — established jewellers put it at roughly 56 to 58 with the number of main pavilion facets varying between six, seven and eight, and GIA gives no figure at all.
- Length to width
- 1.00, or up to about 1.20. GIA gives 1:1 to 1:1.2 in its heart guide and approximately 1.00 in its fancy shape buying guide, noting that most hearts sold in the United States are 1:1 while some cultures prefer elongated ones. It also notes it is not unusual for a heart to be wider than it is long.
- One carat measures
- About 6.2 mm across. A useful sanity check — carat is weight, not size, and two stones of the same weight in different shapes cover quite different amounts of finger.
Choosing a heart diamond
General four Cs advice is written for round brilliants. Where it differs for this shape, it differs like this.
Half a carat is the floor
Three separate GIA sources agree: the shape works best at 0.50ct and above, and below that it can be difficult to perceive the heart at all. This is the one shape where going smaller does not simply mean a smaller version of the same thing.
Clarity shows
GIA notes clarity characteristics are easier to spot in heart shapes, and warns against eye-visible inclusions — which can affect durability and value as well as looks. Check the point in particular.
Colour concentrates
Grouped by GIA with the pear and marquise as shapes that hold more colour than a round brilliant. Aim higher up the scale.
The cleft and the lobes
The vocabulary is worth having: the lobes are the two rounded upper curves, the cleft is the V-shaped notch between them. GIA names the faults by name — pointed lobes, very flat wings that leave an outline more like an arrowhead, high shoulders, an undefined point. A heart lives or dies on symmetry, and it is the shape where a photograph tells you least.
Setting a heart
Shield the point, which is the most vulnerable part. GIA recommends claws set on the lobes rather than in the cleft, so the shape reads clearly, and a rubover or three-claw setting for smaller stones. It also notes that a halo takes a larger heart to carry off.
The wedding ring beside it
Not the easiest. Both the cleft and the point interrupt the line a straight band wants to follow, so we will usually shape one to the ring. Worth seeing both against the finished setting before deciding.
All ten shapes compared, with profile, width and whether to solder the pair.
Heart diamonds, answered
Are heart shaped diamonds tacky?
A badly cut one, at a small size, in a cheap setting — yes, and that is where the reputation comes from. The shape has a floor that no other shape has: GIA advises half a carat and above, because below that the outline stops reading as a heart. Above that size, cut with proper symmetry between the lobes and a clean cleft, it is a genuinely beautiful and unusual stone. The shape is not the problem; the execution usually is.
Are heart shaped diamonds rare?
Relatively uncommon in engagement rings, yes — GIA says so directly. They also tend to cost less per carat than round brilliants, but because fewer are cut, high-quality examples are harder to find. In practice that means the search takes longer rather than the stone costing more.
How big does a heart shaped diamond need to be?
Half a carat is the practical minimum. GIA states across three separate guides that the shape works best at 0.50ct and above, and that below that it can be difficult to perceive the heart at all. If the budget will not reach half a carat in a heart, another shape will serve you better at that size.
How do you wear a heart shaped engagement ring?
Point toward the fingertips, the same orientation as a pear, so the shape reads the right way up to somebody looking at your hand. Worn the other way it reads upside down to everyone except you — which some people prefer, and there is no rule about it.
Do heart shaped diamonds sparkle?
Yes — it is a brilliant cut, faceted the same way a round is. Like the oval, pear and marquise it can show a bow tie across the middle, and like all of them the answer is to look at the stone tilted under a light rather than at the certificate.
Other shapes
- Oval Engagement Rings
- Radiant Cut Engagement Rings
- Marquise Engagement Rings
- Emerald Cut Engagement Rings
- Cushion Cut Engagement Rings
- Pear Shaped Engagement Rings
- Princess Cut Engagement Rings
- Round Brilliant Engagement Rings
- Asscher Cut Engagement Rings
Undecided is a perfectly good place to start — come and see several side by side, which is the only way to settle it. Before that, the natural and laboratory-grown comparison and the ring size guide are the two things worth reading.
Sources
Gemmological claims on this page are from the Gemological Institute of America. Where GIA gives no figure — facet counts for most fancy shapes, several length-to-width ratios — we say so rather than repeat a trade convention as fact.