Not long ago, choosing a diamond shape meant choosing round — or round. That's no longer the case. Over the past several years, and heading into 2025, couples have embraced a wider range of shapes, each with a distinct personality, different light behavior, and a unique effect on the hand.
Here are the four shapes we're seeing most in our consultations right now, with an honest assessment of who each one suits and what you can expect to pay relative to the classic round brilliant.
1. Round Brilliant: The Enduring Standard
The round brilliant remains the most popular diamond shape for engagement rings by a significant margin — roughly half of all diamonds sold are rounds. That's not sentiment. It's optics. The round brilliant has 57 or 58 precisely angled facets engineered over a century of refinement to maximize light return. It is, objectively, the most brilliant cut.
Who it suits
Someone who values timelessness over trendiness. The round solitaire will never look dated. It works on every hand shape and pairs with every setting style — from the most minimal four-prong to an intricate vintage halo. If your partner hasn't expressed a strong preference, round is the safest choice and the one most likely to be loved for a lifetime.
The finger effect
The round shape is symmetrical, so it doesn't elongate or widen the finger. It simply sits — balanced, confident, complete.
Price point
Rounds carry a premium of roughly 20–40% over comparable fancy shapes because cutting a round generates more rough diamond waste. A 1.50ct round of excellent quality will cost noticeably more than a 1.50ct oval of the same color and clarity grade. For clients working within a specific investment level who want maximum size, a fancy shape is often the better route.
2. Oval: The Most Flattering Shape on the Finger
The oval has been one of the most sought-after shapes for the past three years and shows no sign of slowing in 2025. It combines the brilliance profile of a round with an elongated silhouette that creates a striking effect on the hand.
Who it suits
Someone who wants presence without the round's price premium. The oval reads larger than a round of the same carat weight because it covers more finger surface area. It also suits a wide range of hand types, and pairs particularly beautifully with a thin pavé band that lets the stone's shape breathe.
The finger effect
The elongated shape creates a visual lengthening effect — the hand appears more slender and the finger longer. This is one of the primary reasons ovals have become so widely chosen. They flatter almost universally.
What to watch for
Ovals can show a "bow-tie effect" — a dark shadow across the center of the stone when light hits from certain angles. A well-cut oval minimizes this significantly. We evaluate cut quality carefully before sourcing any oval; the difference between a mediocre oval and an excellent one is visible to the naked eye.
Price point
Roughly 15–25% less than a round of equivalent grades — a meaningful difference at higher carat weights.
3. Cushion Cut: Romantic, Soft, and Deeply Versatile
The cushion cut has a rounded-square outline with large, open facets that give it a soft, romantic quality. It's one of the oldest diamond shapes — versions of it predate the round brilliant by centuries — and its resurgence reflects a broader taste for designs that feel personal and artisanal rather than mass-produced.
Who it suits
Someone drawn to vintage aesthetics or to the warmth of soft, diffused light. The cushion's larger facets produce big flashes of brilliance rather than the sparkle-scatter of a round. It's a more contemplative, intimate look. Cushions work beautifully in halo, bezel, and solitaire settings alike.
The finger effect
The square outline with soft corners works on most hand types, sitting close to the finger and framing beautifully in both minimal and elaborate settings.
Price point
Cushions typically run 20–35% below a round of comparable grades — making them an excellent choice for clients who want significant carat weight without extending their investment to match a round of the same size.
4. Elongated Cushion: The Shape of the Moment
The elongated cushion is having a genuine moment in 2025. It sits between the traditional cushion and the oval — longer than a square cushion, softer than an oval — and the result is striking. Design-forward clients and those drawn to something distinctive have driven its popularity, but it has real staying power beyond trend.
Who it suits
Someone who wants something distinctive without being avant-garde. The elongated cushion is luxurious without announcing itself. It suits clients who've looked at ovals and loved the length but prefer the softer, more pillowed silhouette — less geometric, more romantic.
The finger effect
The elongated profile creates the same lengthening effect as an oval, but with a more flowing, less precise quality. On the finger, it reads as graceful rather than architectural.
What to watch for
Quality varies considerably in this shape. Aspect ratio matters enormously — too square and it loses the elongated quality entirely; too narrow and the bow-tie shadow becomes pronounced. Finding a well-proportioned elongated cushion requires access to a broad range of certified stones and careful selection. This is exactly the kind of sourcing that benefits from a direct supplier relationship.
Price point
Comparable to traditional cushions — roughly 20–35% below a round — though premium examples with ideal cut proportions command higher prices as demand has increased over the past two years.
Choosing the Right Shape for Your Partner
The right shape isn't the one that's most popular or the one that photographs best. It's the one that fits the person who will wear it every day. In a consultation, we think carefully about the person: how they dress, the jewelry they already reach for, whether they gravitate toward classic or expressive aesthetics. Inspiration images help, but understanding the wearer matters more.
We source loose diamonds directly, which means we can find the specific shape, cut grade, and proportions that match your vision — not just whatever happens to be available.
Explore our loose diamond selection, or book a consultation to discuss which shape belongs on your partner's hand.