You’ve fallen for the sharp, modern lines of a square stone but you’re not sure where to start once you begin browsing rings online. Princess diamond cut engagement rings sit somewhere between classic and contemporary, and that middle ground can make choosing a setting, metal, and carat weight feel more confusing than it should be.

This guide answers the practical questions you actually have: how the cut affects sparkle and price, why a diamond cut princess engagement ring wears differently to a round solitaire, what to know before buying a natural princess cut diamond, and which settings suit the shape best. We’ll also cover the metal debate, since white gold square diamond engagement rings and yellow gold versions each flatter the stone in different ways depending on skin tone and personal style.

At A Star Diamonds, we cut and set princess cut engagement rings in London by hand in our Hatton Garden workshop, so we see daily what makes a square stone look brilliant rather than glassy. Below, you’ll find everything from the 4Cs as they apply to this cut through to choosing between gold square diamond engagement rings and white gold, plus tips for finding square diamond engagement rings for women that actually suit your hand and lifestyle.

Why princess cut diamonds remain so popular

Square stones didn’t dominate engagement ring counters until the 1980s, when cutters worked out how to shape a diamond’s rough crystal into four clean corners without wasting carat weight. That efficiency matters: a princess cut diamond typically retains 80% of the rough stone during cutting, compared to around 50% for a round brilliant. Less waste at the cutting wheel usually means a lower price per carat for a similar size, which is part of why princess diamond cut engagement rings have stayed in the top three most requested shapes for over twenty years.

Sparkle that rivals round brilliants

Don’t assume sharp corners mean less fire. The modern princess cut carries around 76 facets, arranged to bounce light back through the top of the stone almost as effectively as a round brilliant’s 58 facets, which is worth understanding if you want to know what makes a diamond sparkle most. The GIA notes that facet arrangement, not facet count alone, drives how a diamond handles light, and the princess cut’s chevron pattern was specifically designed to maximise brightness within a square outline.

A well-cut princess diamond gives you the geometry of a square stone without sacrificing the sparkle people expect from a round one.

Comparing the princess cut to other popular shapes

These figures shift depending on the individual stone, but they explain why so many couples browsing gold engagement rings square diamond styles end up comparing princess against cushion before deciding.

A shape that suits how people actually live

Everyday practicality plays a bigger role than most buyers expect. The princess cut’s flat table sits lower in a setting than many fancy shapes, which means less snagging on jumpers and gloves, something we hear constantly from clients at our Hatton Garden workshop who work with their hands. Reasonably priced compared with round stones of equivalent clarity and colour, versatile across white gold, yellow gold, and platinum settings, and instantly recognisable as contemporary rather than dated: that combination is hard to beat, which is exactly why square diamond engagement rings for women across every age group keep landing on shortlists.

How to choose the right princess cut engagement ring

Choosing well starts with understanding that princess cut diamonds hide inclusions less forgivingly than round stones, since their pointed corners and open facets let you see straight into the stone. Aim for clarity of VS2 or better if budget allows, and pay close attention to colour grading too, because the corners of a square stone can show warmth that a round brilliant masks, so it helps to know how to assess diamond quality before comparing certificates.

Prioritise cut quality over carat size

Bigger isn’t automatically better here. A poorly proportioned princess cut looks dull no matter the carat weight, while a well-cut 0.9 carat stone can outshine a mediocre 1.2 carat one. When you’re comparing square diamond engagement rings gold or platinum settings side by side, ask for the depth and table percentages rather than relying on carat weight alone.

Choose cut quality first, then carat weight, and the ring will always look better than the certificate suggests.

Check the setting protects the corners

Square corners chip more easily than rounded edges, so the setting matters as much as the stone itself. Before you commit, run through this checklist:

• Does the setting use four prongs positioned directly over each corner?
• Is there a protective V-tip or bezel detail reinforcing the points?
• Does the band metal suit your skin tone and daily wear, whether that’s white gold engagement rings princess cut diamond or warmer yellow gold?
• Has the jeweller confirmed the stone’s certification from an independent lab such as GIA?

We talk buyers through exactly this at A Star Diamonds, where our goldsmiths reinforce every corner by hand before a ring ever leaves the Hatton Garden workshop.

Popular princess cut ring styles and settings

Settings change how a princess cut reads on the hand, so it’s worth knowing the main types of ring settings before you browse. A solitaire setting keeps the focus entirely on the stone, with four corner prongs holding a single princess cut diamond above a plain band. This works particularly well in white gold square diamond engagement rings, since the cooler metal tone echoes the diamond’s icy brilliance rather than competing with it.

Beyond the solitaire, three styles come up again and again with our Hatton Garden clients:

• Diamond band settings, where smaller stones run along the shoulders, add extra sparkle without shifting attention from the centre stone.
• Hidden halo settings tuck a ring of pave diamonds beneath the princess cut, boosting perceived size while keeping the profile clean from above.
• Three-stone settings flank the princess cut with smaller side stones, often trapezoids cut to match the square outline exactly.

Gold choices matter just as much as the setting style. Yellow gold versus white gold is the first decision for most buyers: yellow suits warmer skin tones and pairs beautifully with vintage-inspired designs, while gold square diamond engagement rings in rose tones have grown popular for their softer, romantic finish against a crisp white stone.

Personal taste ultimately decides which combination wins.

The setting shapes how big a princess cut diamond looks; the metal shapes how warm it feels.

Quality goldsmithing ties every element together. However striking the stone, a poorly finished setting will always undercut it, which is why we hand-finish every prong and corner in-house before any ring reaches a client.

Caring for your princess cut engagement ring

Square corners are the first thing to suffer if you skip regular maintenance, so caring for a princess cut diamond properly protects both the stone and your investment. Grease and soap build up fastest around prongs, dulling the sparkle within weeks of daily wear, particularly if you cook, garden, or work with your hands.

Clean and check it regularly

Gentle habits go a long way. To clean a diamond ring at home safely, soak it in warm water with a drop of washing-up liquid, brush gently with a soft toothbrush around each corner, then dry with a lint-free cloth. Avoid ultrasonic cleaners at home, since vibration can loosen prongs holding a diamond cut princess engagement ring without you noticing until a corner catches on something.

A ring that’s cleaned monthly and checked yearly rarely needs emergency repair.

Get professional checks yearly

Booking an annual inspection catches problems long before they become expensive. With a professional ring cleaning service, a jeweller checks prong tension, corner wear, and band thickness under magnification, something no amount of home cleaning replaces. At A Star Diamonds, every ring we sell comes with lifetime free resizing, polishing, and cleaning, so clients bring their rings back to Hatton Garden rather than risking a high-street jeweller unfamiliar with the setting.

Storing the ring correctly matters just as much as cleaning it. Keep it in a fabric-lined box away from other jewellery, since square corners scratch softer metals and other stones surprisingly easily. Removing rings before manual work, swimming in chlorinated pools, or applying hand cream protects the setting long-term, whether you’ve chosen platinum, yellow gold, or one of our white gold engagement rings princess cut diamond styles. Consistency, not intensity, keeps a princess cut looking new for decades.

A timeless choice for a lasting promise

Square corners, brilliant sparkle, and a lower price per carat than round stones make princess cut diamonds one of the smartest choices you can make for an engagement ring. You’ve now seen how cut quality outweighs carat size, how settings protect those sharp corners, and how a bit of regular cleaning keeps the stone looking new for decades. None of that requires guesswork once you know what to check.

What matters most is finding a jeweller who understands the cut’s quirks and stands behind their craftsmanship long after you’ve paid. That’s exactly what you get when you book a consultation with A Star Diamonds in Hatton Garden, where our goldsmiths set every princess cut diamond by hand and back it with lifetime free resizing, polishing, and cleaning. Come and see the difference proper craftsmanship makes.