- IGI-certified diamonds
- Triple Excellent standard
- Lifetime setting upgrades
- Free, fully insured shipping
- Made to order in Toronto
The heart is the most overtly romantic diamond shape — a modified brilliant where symmetry is everything. Done well it is unmistakable and full of sparkle; done poorly it reads lopsided. It also looks best at a generous size. Here is how to choose one that lives up to the symbol.
Key takeaways
- The heart is a brilliant cut — lively and sparkly — in the shape of a heart.
- Symmetry is critical: even lobes, a defined cleft, and a sharp point.
- It looks best larger, where the shape reads clearly — ideal for a three-carat floor.
- The point should be protected with a V-prong.
- The flattering ratio is roughly 0.90–1.10.
What is a heart shaped diamond?
A heart is essentially a pear with a cleft — a brilliant-cut stone shaped into two rounded lobes meeting at a soft notch on top and a point at the bottom. It carries full brilliant-cut sparkle and is the ultimate romantic statement, distinctive without being unconventional.
Why symmetry is everything
More than any other shape, a heart lives or dies by symmetry. The two lobes must match in size and roundness, the cleft must be sharp and centred, and the point must align with it. A well-cut heart is instantly readable and balanced; an uneven one looks off even to an untrained eye. This is the detail to scrutinise — and the reason every Montare heart is hand-selected for symmetry.
Every centre diamond is Triple Excellent, D–E, VVS and at least three carats — the hard calls are made for you.
Design your ringWhy size matters
A heart needs room to read as a heart. In very small sizes the shape can be hard to make out, especially once it is set. At three carats and up — Montare's floor — the lobes, cleft and point are clear and the shape sings, which makes it a natural fit for our standard.
Ratio and protecting the point
Most people prefer a near-symmetrical 0.90 to 1.10 ratio — a slightly wider heart reads more classic, a slightly taller one more delicate. As with a pear, the bottom point is the vulnerable spot and should be cradled in a V-prong to protect it.
The best settings for a heart
A solitaire with a V-prong keeps all eyes on the shape; a halo adds sparkle and a little size; a three-stone frames it with meaning. See our guide to settings and compare shapes in our visual guide.
Hearts and the Montare standard
Cut and symmetry make the heart — see why Triple Excellent matters. Every Montare heart is lab-grown, D–E colour, VVS1–VVS2 clarity, Triple Excellent, three carats minimum, IGI certified, hand-picked for even lobes and a crisp cleft. Design one in the ring builder or book a consultation.
Design your ring in minutes. Every centre diamond is D–E colour, VVS clarity, Triple Excellent cut and at least three carats — IGI certified, made to order in Toronto.
Open the ring builder →Frequently asked questions
What makes a good heart shaped diamond?
Symmetry — even, matching lobes, a sharp central cleft, and an aligned point. A balanced heart reads instantly; an uneven one looks off.
Do heart shaped diamonds need to be large?
They look best at a generous size where the shape reads clearly. At three carats and up the lobes, cleft and point are unmistakable.
How do you protect a heart shaped diamond?
With a V-prong cradling the bottom point, the most vulnerable part of the stone.
What is the best ratio for a heart?
About 0.90 to 1.10 — a wider heart reads classic, a taller one more delicate.
See a heart to standard. Build one in the ring builder or book a consultation.
The Montare standard
Lab-grown · D–E colour · VVS clarity · Triple Excellent · 3ct minimum · IGI certified
Every ring is made to order in Toronto and backed by our lifetime setting upgrade, with free, fully insured shipping.
Design your ringBook a free consultation