Princess Cut Diamond Rings & Engagement Rings

The princess cut is one of the most recognizable diamond shapes in the world, sharp-cornered, brilliantly faceted, and unmistakably modern. For decades, it held the title of the second most popular engagement ring diamond after the round brilliant, and it remains a defining shape in contemporary diamond jewelry.

If you're considering a princess cut diamond for an engagement ring, earrings, or a custom piece, this guide covers everything you need to make a confident decision.

At Precious Carbon, we carry princess cut diamonds in lab-grown and natural options across a full range of settings and carat sizes.

What Is a Princess Cut Diamond?

The princess cut is a square or slightly rectangular diamond with sharp, uncut corners and a brilliant facet pattern. It was developed in the 1960s and refined through the 1980s into the shape we recognize today.

Unlike the emerald or Asscher cut, which uses step facets for a hall-of-mirrors effect, the princess cut uses a modified brilliant facet pattern that maximizes light return and produces strong sparkle and fire across its flat square face.

Key characteristics of a princess cut diamond:

Square outline with four sharp, pointed corners
57-76 facets in a modified brilliant arrangement
Exceptional brilliance for a square shape
Ideal length-to-width ratio: 1.0:1 to 1.05:1 for a true square
Second-highest brilliance of all diamond shapes after the round brilliant

💡 Comparing the princess cut to other shapes? Our Diamond Shape Guide puts every major cut side by side so you can see exactly how the princess compares to cushion, radiant, emerald, and more.

Why Choose a Princess Cut Diamond?

The princess cut's enduring popularity comes from a combination of qualities that few other shapes can match simultaneously.

Maximum brilliance in a square shape. No other square or rectangular diamond produces more light return than the princess cut. If you want the sparkle of a round brilliant in a square silhouette, this is the shape.

Efficient use of rough. The princess cut retains approximately 80% of the rough diamond during cutting, compared to around 50% for a round brilliant. This efficiency translates directly to lower per-carat prices.

Clean, geometric aesthetic. The sharp corners and flat table create a modern, architectural look that pairs well with both contemporary and traditional settings.

Versatility. The princess cut works in virtually every setting style, solitaire, halo, pavé, three-stone, and channel-set. Its square shape also pairs naturally with matching princess cut side stones.

Unique Settings for Princess Cut Diamonds

Classic four-prong solitaire - One prong at each corner protects the sharp tips while keeping the diamond fully visible. The most popular choice for princess cut diamond engagement rings is clean, secure, and timeless.

Channel-set band - Princess cut side stones set in a channel (metal on both sides, no prongs between stones) create a seamless line of diamonds flanking the center stone. The square shape of the princess cut fits channel settings perfectly.

Halo setting - A frame of round brilliant micro-pavé diamonds around a princess center creates a striking contrast between the geometric center stone and the soft circular halo. One of the most popular unique settings for princess cut diamonds.

Bezel setting - A full metal rim around the princess cut softens its sharp corners into a slightly rounded square outline and offers maximum protection. The modern look of a bezel-set princess cut is distinctly contemporary.

Cathedral setting - The band arches up to meet the stone, elevating the princess cut and creating a dramatic profile. A popular choice for those who want their ring to have an architectural presence.

Princess Cut Diamond Earrings

Princess cut diamonds are a natural fit for stud earrings - the square shape sits cleanly against the earlobe, the flat table faces forward, and the brilliant facets catch light from every angle.

Princess cut diamond earrings are typically set in four-prong settings that protect each corner while keeping the diamond fully exposed. For a more modern look, bezel-set princess cut studs offer a sleek, geometric alternative that requires no prong maintenance.

Matching a pair of princess cut studs requires careful attention to cut quality, color, and clarity - both stones should appear identical under normal lighting.

Princess Cut Diamond Ring: Carat Size Guide

1 carat princess cut diamond ring - The square shape at 1 carat produces a bold, clean look. The princess cut's large table means 1 carat has a significant presence, more so than a 1 carat round on the same finger width.

2 carat princess cut diamond ring - A genuinely striking ring. At 2 carats, the princess cut's square face creates a wide, flat display of brilliance that reads as significantly larger than its weight.

3 carat and above - At 3+ carats, the princess cut is dramatic. The large, flat table at this size makes inclusions and color more visible, so prioritizing quality grades becomes more important.

💡 Understanding carat weight vs visual size is critical when choosing a princess cut, as its square face can look very different from other shapes at the same weight. Our Diamond Carat Guide explains everything.

FAQ: Are Princess-Cut Diamonds Out of Style?

The short answer: no. The princess cut is not out of style, but its place in the market has shifted.

Through the 1990s and 2000s, the princess cut was the default choice for buyers who wanted something other than a round brilliant. In the 2010s, the rise of the oval, cushion, and elongated shapes drew some buyers away from square cuts. Today, the princess cut occupies a strong niche: buyers who specifically want a square diamond with maximum brilliance still reach for the princess cut first.

Modern princess cut diamonds are also being revisited with fresh settings, east-west orientations, asymmetric halos, and mixed metal bezels, which give the classic shape a genuinely contemporary feel. The princess cut isn't trending in the way the oval or Toi-et-Moi are, but it remains a confident, deliberate choice with a clearly defined aesthetic, and that's not going out of style.

Why Precious Carbon for Your Princess Cut Diamond

Every princess-cut diamond at Precious Carbon is GIA or IGI-certified, available in lab-grown and natural options. Our free custom design service lets you build your ideal princess cut ring or earrings with CAD previews before production.