Marquise Cut Diamond

Description of Marquise Cut Diamonds

The marquise diamond is shaped like a long, thin boat with a point at each end. Marquise cut diamonds require larger, or at least longer, rough diamonds than round cut diamonds of similar carat weight. However, the marquise cut can make a finished diamond appear larger than a round cut diamond of similar carat weight.

Jewelers aim for a length to width ratio between 1.75 and 2.25. Even at these recommended ratios, there is still a possibility the diamond will exhibit the “bow-tie” effect, a dark space in the center of the stone that does not reflect light. Properly cut, the marquise diamond should reflect light on all sides, without any “bow-ties”.

The marquise cut creates a more fragile diamond than other cuts, especially if the pointed ends are left exposed. Ideally the marquise cut diamond will be secured with six prongs or more. Most marquise cut diamonds used in ring settings are designed to run parallel to the fingers, giving an impression of elongation.

History of Marquise Cut Diamonds

Legend says King Louis the 14th commissioned this design to honor his mistress, the Marquise de Pompadour.

Celebrities Wearing Marquise Cut Diamond Rings

Catherine Zeta-Jones (set widthwise, 10-carat, engagement to Michael Douglas), Portia de Rossi (engaged to Ellen DeGeneres), Queen Latifah (cuff, 100 carats total), and Victoria “Posh Spice” Beckham (set lengthwise, 3-carat).

Trivia for Marquise Cut Diamonds

  • Legend says French King Louis the 14th wanted to honor his mistress, the famous Marquise de Pompadour, and had an artisan craft a diamond inspired by her beautiful smile. Fittingly, this marquise was well-known as a great patron of the arts, including theater, sculpture, architecture, and opera.
  • A different legend says the ring was a favorite of 18th century French couriers in Versailles, who displayed the ship-shaped rings as a symbol of status and rank.