Marquise Cut Diamonds

Selecting a loose marquise cut diamond involves a few key details, but knowing what to focus on makes the process simple.

Table and Depth : Get the Balance Right

Aim for a depth of 58% to 62% and a table of 53% to 63%. These proportions help maximise light return, allowing the diamond to reflect light beautifully.

Length-to-Width Ratio: Define the Shape  

For a classic Marquise shape, choose a length-to-width ratio between 1.75 and 2.00. This creates a balanced appearance without making the diamond look too wide or too narrow.

Symmetry: Never Compromise on This 

Never settle for less than a Very Good or Excellent symmetry grade from a recognised laboratory such as GIA or IGI.

Pointed Tips : Check Their Condition Carefully 

Ensure the pointed ends are crisp and free from surface-reaching inclusions, as these can reduce the diamond’s durability.

Marquise cut diamonds maximise visual size per carat due to their distinct elongated silhouette and comparatively shallow cut. Because they’re cut shallower than round diamonds, a larger share of their carat weight sits across the top surface rather than being hidden beneath in a deep pavilion. 

This long, slender shape spreads across the hand, covering significantly more surface area than a round or cushion cut of the same weight. The sharp, extended tips also create an optical illusion, drawing the eye outward along the length of the stone and making it appear larger than its actual measurements suggest.

To enhance this size illusion further, our Ayla Yellow Gold Halo setting works beautifully. This design encircles the marquise’s perimeter with a delicate border of brilliant accent diamonds, instantly multiplying its visual footprint. The rich tone of the yellow gold band also provides a high-contrast frame, making the centre stone appear even larger.