Heart Natural Diamonds

What is a heart-shaped natural diamond?

A heart-shaped natural diamond is a modified brilliant cut, divided into two equal lobes by a central cleft, finishing in a single point at the base. It retains between 56 and 58 facets, depending on how the cutter works around the cleft geometry, and delivers good light return when the proportions are carefully executed.

Unlike round or oval brilliants, the heart shape demands consistent bilateral symmetry — both lobes must mirror each other in width, depth and curvature, and the cleft must be well-defined rather than shallow. Cutters work with natural rough that already carries a suitable crystal formation; because heart shapes can sacrifice a significant proportion of rough weight to achieve the outline, they represent a genuine commitment of material from the mine. This is one reason heart natural diamonds at matched carat weights tend to carry a premium over comparable fancy shapes such as pear or marquise. Length-to-width ratios of 0.95–1.05 produce the most balanced, proportionate form.

How to choose a heart natural diamond — key quality considerations

When selecting a heart natural diamond, symmetry is the single most critical factor — more so than with cushion or round cuts. Both lobes should be equal, the cleft deep and clean, and the point sharp rather than rounded. Even a GIA, HRD or IGI certificate cannot fully capture symmetry for a heart shape; always review a 360-degree video or request a loupe inspection before committing.

For colour, heart natural diamonds in the G–H range offer near-colourless appearance at a meaningfully lower price per carat than D–F stones; the shape's broad table can make colour more visible than in a round brilliant, so buyers prioritising a white look should not go below H. Clarity-grade SI1 or VS2 is typically sufficient — inclusions are often masked by the facet pattern near the wings. For carat weight, heart natural diamonds under 0.5ct can lose definition in the outline; 0.7ct and above allows the shape to read clearly when worn.

What does a heart natural diamond cost in the UK?

Heart natural diamonds are priced primarily by the four Cs — carat, colour, clarity and cut — with an additional premium for the shape's relatively low yield from rough. Among fancy shapes, hearts sit above ovals and pears on price-per-carat but below some emerald or asscher cuts at matched grades.

For context, Bridebook's 2026 UK average engagement ring spend of £2,247 covers a centre stone and setting; buyers who want a heart natural diamond as the feature stone often look at 0.5ct–1.0ct stones to stay within or near this budget, depending on colour and clarity priorities. Natural origin adds a further premium over lab-grown equivalents, reflecting finite supply from the mine. Stones above 1.0ct with GIA-certified H/VS2 credentials represent a more significant investment. All heart natural diamonds on this page are held in inventory and carry complimentary insured UK delivery, with a 30-day return window — no questions, no exclusions.

How are heart natural diamonds certified?

Every heart natural diamond available here is certified by GIA, HRD or IGI — three internationally recognised grading laboratories whose reports document the stone's carat weight, colour grade, clarity grade, cut proportions and symmetry rating. For a heart shape, the symmetry descriptor on the certificate carries particular weight, as the grader assesses lobe balance and cleft definition directly.

Certification also confirms the stone's natural origin — a critical distinction from lab-grown alternatives. Natural heart diamonds form over billions of years under geological pressure; the certificate is the chain of custody and grading record that supports both insurance valuation and, should it matter to the buyer, long-term resale. When a heart natural diamond is set into one of our rings at the Hatton Garden workshop, the finished piece is then hallmarked at the London Assay Office, recording the metal standard independently of the diamond's own certificate.

Setting a heart natural diamond — what works and what to avoid

Heart natural diamonds present specific setting challenges. The point — the most structurally vulnerable part of the stone — should always be protected by either a V-shaped claw or a bezel section that wraps the tip. A standard four-claw setting is inadequate here; five- or six-claw arrangements, with one claw dedicated to the point, are the standard approach used in our Hatton Garden workshop.

The cleft benefits from a double-claw or split-prong at the top, preventing the lobes from lifting. Metal choice interacts with the stone's colour: platinum or white gold settings emphasise the colourlessness of D–H stones, while yellow gold can add warmth to I–J heart natural diamonds, making the slight tint appear intentional rather than a grading artefact. Rose gold works well when the heart shape is being set as a standalone solitaire or a bezel-set dress ring. When set into a ring, lead time at the workshop is 7–14 working days from order confirmation.