Princess Cut vs. Cushion Cut Moissanite: The Complete Comparison

September 21, 2026

Princess cut and cushion cut moissanite are often compared because both offer a square or near-square silhouette as an alternative to the round brilliant. But their similarities end at the outline. The two cuts produce different brilliance characters, different fire patterns, different finger coverage, and pair differently with settings and bands. Here is the complete comparison.

Shape and Outline

Princess cut: A true square (or very slightly rectangular) with sharp, pointed corners at all four vertices. The outline is geometric and angular — modern, precise, and architectural in character. The sharp corners are the defining feature and the most distinctive element of the princess cut silhouette on the hand. Cushion cut: A square or rectangular outline with rounded corners — the corners are softened into curves rather than sharp points, giving the shape its characteristic “pillow” or “cushion” appearance. Cushion cuts vary in how square vs. rectangular they are (length-to-width ratio) and how rounded the corners are — some look almost round, others are distinctly square with just slightly softened corners.

Facet Structure and Light Performance

Princess cut: The princess cut has a distinctive chevron-pattern pavilion — V-shaped facets radiating from the center culet. This creates a “crushed ice” or “crisscross” pattern of light return, with many small, bright flashes rather than large, organized reflections. The princess cut produces high brilliance (white light return) with moderate-to-high fire. The sharp facet junctions create crisp, defined light patterns. Cushion cut: Cushion cuts come in two main facet variations: - Standard cushion (chunky cushion): Larger facets producing bold, defined light flashes — similar to an old mine cut in character. Strong fire and distinct, organized reflections. - Crushed ice cushion: Many smaller facets producing a sparkling, scattered light pattern similar to the princess cut. High brilliance but less defined individual reflections. Moissanite’s high dispersion (0.104 — 2.4× diamond) means both cuts display strong fire, but the cushion cut (particularly the standard/chunky version) tends to show more vivid, distinct spectral color flashes because its larger facets act as more effective prisms. See our dispersion guide.

Finger Coverage and Visual Size

Princess cut: The princess cut’s square outline with sharp corners provides good finger coverage relative to its carat weight. A 1ct equivalent princess cut (approximately 5.5mm) covers the finger efficiently because the corners extend the apparent width of the stone. However, the corners also mean slightly less visual length than a cushion of the same dimensions. Cushion cut: Cushion cuts typically have slightly less finger coverage than princess cuts of the same carat weight because the rounded corners reduce the effective width at the stone’s widest visual points. However, cushion cuts often have greater depth (higher depth percentage) which can make them appear slightly smaller face-up than a princess of the same weight. A longer, more rectangular cushion (length-to-width ratio 1.10–1.20) maximizes finger coverage for cushion buyers.

Durability Considerations

Princess cut: The sharp pointed corners of the princess cut are the most vulnerable point on the stone. Corner chips — while rare given moissanite’s Mohs 9.25 hardness and 7.6 MPa·m½ fracture toughness — are most likely to occur at the corners if the stone receives a sharp direct impact at that angle. Princess cuts should be set in prong or bezel settings that protect all four corners. Cushion cut: The rounded corners of the cushion cut have no vulnerable sharp points. The cushion is generally considered the more durable shape for daily wear because there are no corner points to chip. This makes the cushion cut a practical choice for buyers who are active or concerned about corner protection. See our toughness guide.

Setting Compatibility

Princess cut: Best suited to four-prong settings that cover and protect the four corners, or bezel settings that enclose the full perimeter. Cathedral settings work well with the angular, architectural character of the princess. The princess cut pairs naturally with geometric, modern band designs. Cushion cut: Highly versatile — works beautifully in solitaire, halo, pavé, and vintage-inspired settings. The cushion’s softer outline pairs naturally with halo settings (round or cushion-shaped halo), which enhance the apparent size of the center stone significantly. Cushion cuts are also particularly well-suited to east-west (horizontal) settings for a contemporary look.

Style Personality

Princess cut: Modern, geometric, architectural. Appeals to buyers who prefer clean lines, contemporary design, and a structured aesthetic. The princess cut reads as precise and deliberate. Cushion cut: Romantic, vintage-inspired, soft. The rounded corners give the cushion a warmer, more organic character than the princess. Cushion cuts are frequently described as “timeless” and work equally well in vintage-inspired and contemporary settings.

The Quick Comparison

Choose princess cut if: You want a square stone with a modern, geometric aesthetic; you prefer crisp, architectural lines; your setting will protect the corners; you prefer high brilliance with a crisscross light pattern. Choose cushion cut if: You want a softer, more romantic square or rectangular shape; you prefer strong, vivid fire with bold color flashes; you want maximum durability without corner vulnerability; you plan to use a halo or vintage-inspired setting.