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A heart shape diamond is a modified brilliant cut — two symmetrical lobes meeting at a defined cleft at the top, narrowing through the wings to a single point at the bottom — faceted for fire and immediately recognizable as the diamond trade's most literal romantic shape. Guru Diam stocks 169 IGI-certified, CVD-grown heart shape diamonds in colorless white, in stock now from our New York Diamond District desk.
Heart is a shape almost every client asks for by name, and yet most sourcing pages treat it as an afterthought — a single listing buried under round and princess with no real explanation of symmetry or what makes one heart cut noticeably better than another. This guide covers the shape properly, then gets you to in-stock inventory.
What is a heart shape diamond?
A heart cut is a modified brilliant: two rounded lobes at the top separated by a cleft, narrowing through two "wings" to a single point at the bottom, faceted for fire — typically around 59 facets — rather than the broad flat planes of a step cut. It's the most demanding symmetry problem in mainstream diamond cutting. The cleft depth, the two lobes, the two wings, and the point all have to mirror each other, or the stone reads as visibly lopsided face-up.
Why heart shape symmetry is harder to cut right
Heart tolerates almost no cutting error compared to a round, where minor deviations are hidden by the shape's circularity — every asymmetry in a heart is visible to the naked eye. A cleft cut too shallow reads like a rounded pear instead of a heart; a cleft that's too deep or off-center makes the whole stone look lopsided. Below roughly half a carat, the cleft can be hard to see clearly at all, which is why heart shape tends to perform best starting around 0.50ct and up, where the outline reads distinctly.
Because of this, request the outline symmetry grade specifically when sourcing a heart shape stone — not just the overall cut grade. Two stones with identical carat, color, and clarity can look meaningfully different face-up if one has better lobe and wing symmetry than the other.
Heart shape: spec and availability
| Spec | Detail |
|---|---|
| Outline | Two symmetrical lobes, defined cleft, single bottom point |
| Facet style | Modified brilliant (~59 facets) |
| Recommended minimum size | ~0.50ct and up, where the cleft reads clearly |
| Color | Colorless, D–J range (fancy color available separately) |
| Growth method | CVD-grown |
| Certification | IGI standard; GIA available on request |
| Stone type | Certified single stones (not melee) |
| On-hand count | 169 pieces |
| Typical uses | Solitaire rings, pendants, statement earrings, anniversary pieces |
Sourcing heart shape diamonds wholesale
With 169 pieces on hand, heart offers solid breadth across size and symmetry grade for solitaire, pendant, and earring requests, with made-to-order cutting available for anything outside current stock.
Guru Diam sources heart shape diamonds as wholesale, trade-only inventory — no retail markup — from our New York Diamond District desk (36 West 47th Street, Suite 601A) and our Los Angeles office (607 South Hill Street). In-stock pieces ship same-day from New York. For a custom setting, CAD-to-finished-piece turnaround runs 4–6 days. Heart is also available in fancy color — see our fancy color heart guide for yellow, pink, blue, green, and champagne options.
Ready to buy? Open a verified wholesale account at /signup and book time with a gemologist at /book-appointment.
Frequently Asked Questions
What is a heart shape diamond? A heart shape diamond is a modified brilliant cut with two symmetrical lobes meeting at a defined cleft, narrowing through the wings to a single point. It's faceted for fire rather than step-cut, and is one of the most recognizable diamond shapes in the trade.
Why is heart shape diamond symmetry so important? Because a heart has zero tolerance for the kind of minor cutting deviation that a round shape hides easily. The cleft, both lobes, both wings, and the point all have to mirror each other, or the asymmetry is visible face-up. Request the outline symmetry grade, not just the overall cut grade, when sourcing a heart.
What's the minimum carat weight for a heart shape diamond to look good? Heart shape generally performs best starting around 0.50ct and up, since the cleft — the defining feature of the shape — can be difficult to see clearly on smaller stones.
Are Guru Diam's heart shape diamonds lab-grown, and are they certified? Yes. Guru Diam's heart shape inventory is CVD-grown and IGI-certified as standard, with GIA certification available on request. All pieces are certified single stones, not melee.
How fast can I get a heart shape stone or a finished custom piece? In-stock pieces ship same-day from New York. For a custom setting, CAD-to-finished-piece turnaround runs 4–6 days from our New York and Los Angeles desks.
