Shape No. 10 · Heart Brilliant Cut
Heart Shaped Diamond
The Ultimate Declaration
The heart shaped diamond is the most intentional of all diamond shapes — a stone that makes its meaning explicit before a single word is spoken. A pear diamond cut symmetrically in two, with a precise cleft carved at its rounded top, the heart shape demands more from its cutter than any other brilliant cut. Every curve, every lobe, every degree of the cleft must be perfect — because the human eye, trained since childhood on the icon of the heart, will immediately detect any asymmetry or imbalance. When a heart diamond is right, it is extraordinary.
'The heart diamond is the only shape whose meaning is inseparable from its form. Every other diamond shape communicates through light and proportion; the heart communicates through silhouette alone — and that message has not changed in five hundred years.'
History
Origin & History of the Heart Diamond
The heart shaped diamond is among the oldest fancy shapes in recorded diamond history — and its earliest documented mention connects it directly to one of the most famous collections of jewels in the Renaissance world. The first known written reference to a heart shaped diamond appears in a 1463 letter from the Milanese ambassador Nicodemo Tranchedini to the Duke of Milan, Galeazzo Maria Sforza, describing a gift of a heart shaped stone sent by the Duke of Burgundy, Charles the Bold. That a heart shaped diamond existed as a recognizable, giftable form in the court of 15th-century Burgundy tells us something remarkable: the symbolism of the heart, and the desire to express it in the most precious material available, is as old as the craft of diamond cutting itself.
Through the following centuries, the heart shaped diamond appeared occasionally in royal and aristocratic jewelry — always associated with declarations of love and romantic intention. Mary Queen of Scots famously sent a heart shaped diamond ring to Queen Elizabeth I of England in 1562, a gesture whose political as well as sentimental significance was understood by both recipients. The Cheapside Hoard, a cache of Elizabethan and Jacobean jewelry discovered in London in 1912 and dating to around 1600–1640, contained several heart shaped stones, confirming that the shape was part of the broader jewelry vocabulary of the era.
In the modern era, the heart diamond is cut using brilliant-cut faceting — the same 56 to 58 triangular and kite-shaped facets adapted for its distinctive outline. Structurally, the heart is a modified pear: take a well-proportioned pear shaped diamond, score a precise cleft at the rounded top between the two lobes, and shape the resulting halves into matched, mirror-image curves — and you have a heart. This sounds simpler than it is. The cleft must be the right depth (neither too shallow, producing a blunt top, nor too deep, making the lobes appear to droop apart), the two lobes must be precisely equal in size and curvature, and the belly must flow into the point with the same graceful taper a pear would exhibit. Any imbalance, and the recognizability of the heart shape — the entire point of the cut — is compromised.
Celebrity has always played a role in the heart diamond's cultural presence. Among the most celebrated: the 69.42-carat Taj Mahal diamond gifted by Richard Burton to Elizabeth Taylor (a heart shaped stone), and more recently Nicki Minaj's heart shaped engagement diamond and Lady Gaga's pink heart diamond. The shape maintains a devoted following of buyers for whom no other form of romantic declaration will suffice.
1463
The earliest known written reference to a heart shaped diamond appears in a letter from the Milanese court, describing a heart shaped stone gifted in the court of Charles the Bold, Duke of Burgundy.
1562
Mary Queen of Scots sends a heart shaped diamond ring to Queen Elizabeth I of England — one of the earliest documented uses of the shape as a deliberate diplomatic and romantic token.
1600 - 1640
Heart shaped diamonds appear in the Cheapside Hoard — a cache of Elizabethan and Jacobean jewelry discovered in London — confirming the shape's place in the broader jewelry vocabulary of the era.
1900s
Modern brilliant-cut faceting is applied to the heart shape, replacing earlier table-cut or rose-cut heart diamonds with stones of significantly greater light performance while preserving the iconic outline.
Present
The heart shaped diamond remains a consistent choice in the fine diamond market — never the most popular shape, but with a loyal following of buyers for whom its symbolic directness is its most important attribute.
Anatomy
The Anatomy of the Heart Diamond
The heart diamond is anatomically the most complex of all brilliant-cut shapes — its outline must satisfy both optical requirements for light performance and the precise proportional demands of a universally recognized symbol. Every element must work in concert to produce a shape that is immediately legible as a heart.
The Most Critical Proportion
The Cleft: Depth, Symmetry and Legibility
The cleft — the V-shaped notch carved between the two lobes at the top of the heart — is the most technically demanding feature of the heart cut and the one that most determines whether the shape reads clearly as a heart or fails to do so. A cleft that is too shallow produces a rounded top that looks more like a pear than a heart; a cleft that is too deep separates the lobes so dramatically that the shape looks pinched or divided rather than unified. The ideal cleft is deep enough to create a clear, unmistakable indentation between two well-defined lobes, but not so deep that it visually fractures the outline. The cleft must also be perfectly centered on the stone's axis — even a slight offset makes one lobe appear larger than the other, which the eye immediately detects.
The defining notch at the top center of the heart. The cleft's depth and sharpness determine the immediate legibility of the shape. It must be centered exactly on the stone's length axis, be of appropriate depth (not too shallow, not too deep), and have smoothly curved sides rather than a harsh V-cut.
The two rounded bulges at the top of the heart, separated by the cleft. Lobe symmetry is perhaps the most critical quality criterion in heart diamonds — the two lobes must be identical in size, curvature, and position. Even a small difference between the lobes is immediately obvious to the human eye, trained since childhood on the ideal heart shape.
The curved sections transitioning from each lobe outward and downward toward the widest point of the belly. Like the pear's shoulders, these must flow smoothly without flattening or bowing. The shoulders set the character of the upper half of the stone and significantly affect whether the heart reads as graceful or awkward.
The widest section of the heart, at approximately the mid-point of the stone. The belly width relative to the length determines the length-to-width ratio. A ratio of 0.90–1.10 places the widest point naturally and produces a classically proportioned heart; narrower ratios produce a thin, elongated heart that can look more like a flame or leaf than a heart.
The curved lower sections connecting the belly to the point. The wings determine the taper and flow of the lower half of the heart. They must taper symmetrically toward the point — asymmetric wings create a twisted or lopsided appearance in the lower silhouette that no setting can correct.
The pointed base of the heart — structurally identical to the pear's tip and carrying the same vulnerability. A V-prong is the standard and recommended prong type for the heart's tip, providing coverage from both sides. The sharpness and central alignment of the point are quality indicators; a blunt or off-center point diminishes the overall silhouette.
Buying Guide
Expert Advice for Buying a Heart Diamond
Size Matters More Here Than in Any Other Shape
The heart shape's silhouette only reads clearly as a heart above a certain carat weight and face-up diameter. In very small sizes — below approximately 0.40ct — the cleft, lobes, and point all compress to the point where the shape loses its legibility and can appear as an indistinct rounded form rather than a recognizable heart. At 0.50ct and above, the heart shape is clearly readable. For a solitaire engagement ring, we recommend a minimum of 0.70ct to ensure the shape is unambiguous and commanding on the finger. Hearts used in halo settings can be slightly smaller, as the halo defines and amplifies the outline. This is the one shape where going larger is an optical necessity as much as a preference.
Lobe Symmetry Is the Single Most Important Quality Factor
When evaluating any heart shaped diamond, the first and most important assessment is lobe symmetry. Lay the stone face-up on a white surface and view it from directly above. The two lobes should appear as perfect mirror images — equal in size, equal in curvature, equal in how far they extend from the cleft. A stone where one lobe is visibly larger, rounder, or higher than the other will never read as a beautiful heart, regardless of its color, clarity, or carat weight. This assessment must be made by viewing the actual stone or high-quality photographic imaging. A GIA report will note a symmetry grade, but it does not specifically evaluate lobe matching — that evaluation is yours to make.
Protect the Point and Consider the Cleft in Setting Design
Like the pear, the heart shaped diamond has a pointed tip that requires V-prong protection. But the heart also introduces a unique setting consideration that no other shape presents: the cleft. The indentation at the top of the heart must be accommodated in the setting — particularly in bezel or half-bezel settings, where the metal must follow the outline of the cleft rather than simply spanning across the top. A poorly designed setting that covers the cleft with a straight line of metal effectively converts the heart's silhouette into a pear, destroying the shape's defining feature. Ensure your jeweler has experience with heart shaped diamonds specifically, and review the setting design from above before committing.
Wear it With Confidence — the Heart Rewards Commitment
The heart shaped diamond is the most personal and deliberate of all diamond shapes, and buyers sometimes worry whether it is 'too much' — too romantic, too obvious, too bold a declaration. Our experience is that buyers who choose the heart diamond almost universally wear it with great pride and a strong sense of personal identity. It is not a shape that works for everyone — but for those for whom it is right, nothing else will do. The heart shape asks its wearer to commit fully to its symbolism, and it rewards that commitment with a diamond that is uniquely, unmistakably expressive. If you are drawn to this shape, trust that instinct.
Continue Exploring
Shapes Related to the Heart Diamond
The heart's structural origin — a pear diamond bisected at its rounded top and given a cleft to form the two lobes. The pear shares the heart's tapered point, V-prong requirement, and brilliant-cut faceting, but with a directional teardrop outline rather than an explicitly symbolic one.
If you love the heart's romantic character but want a shape that is more versatile in setting and wearability, the oval offers a similarly personal, feminine aesthetic with above-average face-up size and a more universally flattering silhouette on the finger.
The benchmark for brilliant-cut light performance, and the heart's optical reference point. If the heart's symbolism appeals but its proportional demands concern you, the round brilliant delivers equivalent sparkle with much greater tolerance for variability in cutting quality and proportion.
Ready to Begin?
Find Your Perfect Heart Diamond
Browse Michael Gabriels' heart shaped diamond collection — each independently certified by the GIA, personally evaluated for lobe symmetry, cleft quality, and tip alignment by our gemologists.
Common Questions
Diamond Shape FAQ
Shape refers to the outline of the diamond as viewed from above — round, oval, pear, and so on. Cut refers to the quality of the craftsmanship: how well the diamond's facets are angled, polished, and proportioned. A round diamond with an Excellent cut grade has been faceted to precise ideal proportions. A round diamond with a Poor cut grade has the same shape but far inferior light performance. Both shape and cut matter; shape determines the diamond's silhouette, cut determines how beautifully it performs within that silhouette.
Elongated shapes — particularly the marquise, oval, and pear — tend to have the largest face-up appearance relative to their carat weight, because their mass is spread across a longer surface area. The emerald cut also reads as large due to its open table. The round brilliant, by contrast, concentrates mass into a compact depth, so a 1.00ct round will measure approximately 6.5mm across, while a 1.00ct oval may measure 8.0 x 5.5mm — appearing visibly larger in many settings.
The round brilliant is the most scientifically optimised shape for light return — its 58 facets are positioned according to precise mathematical principles that maximise brilliance, fire, and scintillation simultaneously. However, "best" is subjective. A well-cut oval, cushion, or radiant can be extraordinarily beautiful, and many buyers prefer the distinctiveness of a fancy shape over the conventional round. The most important factor is ensuring the cut quality is excellent, regardless of the shape you choose.
Round brilliant diamonds have historically held their resale value better than fancy shapes, largely because they represent the largest segment of market demand. Fancy shapes — ovals, pears, cushions — can fluctuate more in resale value depending on current trends. That said, diamonds are generally not considered liquid investment assets, and the intrinsic beauty and personal meaning of your chosen shape should take precedence over resale considerations in most purchasing decisions.
For round brilliants, the GIA and AGS provide cut grades (Excellent/Ideal) that reflect overall proportion quality. For fancy shapes, no equivalent standardized cut grade currently exists — which means buyers must evaluate proportions themselves. At Michael Gabriels, each of our individual shape guides includes a detailed proportions section with the specific measurements you should look for, and our gemologists are available to review any stone you are considering.
