Marquise diamonds are unique, elegant and relatively rare. In fact, only 1.5% of the GIA-certified diamonds available for sale globally are marquise diamonds. They are less expensive than round diamonds, and they make fingers look elongated and slim. As marquise diamonds are long and narrow, they look larger than all other diamond shapes of the same carat weight. The name of this shape comes from Marquise de Pompadour, to whom King Louis XIV of France allegedly presented a stone cut to resemble her perfectly shaped mouth.
Marquise Diamond Cut Guide
Before buying marquise diamonds it’s important to understand some key features.
Symmetry is extremely important in marquise cut diamonds. The two ends should align with each other, and the right and left sides should form a mirror image. Even a slight misalignment in the points can greatly impact the final look. Which is why excellent or very good symmetry is strongly recommended.
While 1.75 – 2.15 length to width ratio is considered the classic for marquise cut diamonds, personal preference should dictate how narrow or chubby your diamond should be.
The chart below serves as a general guideline for evaluating the cut of a marquise diamond.
|TABLE %||53 - 63||52 or 64 - 65||51 or 66 - 68||50 or 69 - 70||<50 or >70|
|DEPTH %||58 - 62||56 - 57.9 or 62.1 - 66||53 - 55.9 or 66.1 - 71||50 - 52.9 or 71.1 - 74||<50 or >74|
|GIRDLE||Very Thin to Slightly Thick||Very Thin to Slightly Thick||Very Thin to Thick||Very Thin to Very Thick||Extremely Thin to Extremely Thick|
|CULET||None||Very Small||Small||Medium||> Medium|
|LENGTH TO WIDTH RATIO||1.85 - 2.00||1.75 - 1.84 or 2.01 - 2.15||1.65 - 1.74 or 2.16 - 2.30||1.55 - 1.64 or 2.31 - 2.45||> 1.55 or < 2.45|
Marquise Diamond Colour Guide
Like most diamonds, smaller marquise diamonds will hide colour better while larger stones will show colour easier. However, as marquise diamonds look larger than other diamond shapes, even smaller stones may appear slightly darker at the points. For this reason, if you want a really colourless diamond, it is best to opt for the D-F range.
The colour chart below serves as a general guide for evaluating colour in marquise diamonds, based on the carat weight.
|< .50 ct.||D - G||H - I||J - K||L - M||> M|
|.51-1.0 ct.||D - F||G||H - I||J - K||> K|
|1.0-2.0 ct.||D - F||D - F||G - H||I - J||> J|
|> 2.0 ct.||D - F||D - F||G||H - I||> I|
Marquise Diamond Clarity Guide
Evaluating clarity in marquise diamonds is subjective like in case of all other diamond shapes. Let’s not forget that each consumer has their own standard for clarity; some feel comfortable with inclusions as long as they are not eye-seen, others prefer flawless stones.
The clarity chart below is based on the GIA clarity grading system. It provides general guidelines for picking the right diamond, based on your inclusion tolerance.
|< .50 ct.||FL - VS2||SI1 - SI2||I1||I2||> I2|
|.51-1.0 ct.||FL - VS1||VS2 - SI1||SI2||I1 - I2||> I2|
|1.0-2.0 ct.||FL - VVS2||VS1 - VS2||SI1 - SI2||I1||> I1|
|> 2.0 ct.||FL - VVS2||VS1 - VS2||SI1||SI2||> SI2|