Lab Grown Dutch Marquise Diamonds

Dutch Marquise refers to a specific style of marquise cut, typically featuring a slightly fuller, rounder outline and a higher crown than the standard marquise shape. In lab grown stones, this cut is applied to rough grown via CVD or HPHT, with the same proportions and shaping standards used regardless of origin.

Carat weight measures how heavy a diamond is, not its physical dimensions, so two lab grown stones of the same weight can have different lengths and widths. Length-to-width ratio changes how that weight is distributed across the stone. A higher ratio (closer to 2.10) spreads the weight further along the length, making the stone appear larger face-up than a shorter, wider stone of the same carat.

Depth percentage has a stronger effect on elongated cuts than on round stones, because light travels a longer path across the length of the diamond. This applies equally to lab grown stones. A depth outside the ideal range increases the likelihood of a visible bow-tie, even when the ratio itself is correct.

This happens when the two long sides of the stone aren’t cut as true mirror images of each other, usually due to rough shape limitations or cutting error during faceting. It’s unrelated to growth method and affects how symmetrical the stone looks face-up, independent of carat, colour or clarity grade.

The pointed ends have a narrow angle and less surrounding material than the rest of the stone, making them more prone to stress fractures during setting or from impact afterward, regardless of whether the diamond is lab grown or mined. Some jewellers apply additional metal coverage (V-prongs or protective tips) specifically to address this.

Yes. A certificate confirms cut, colour, clarity, carat and growth method, but doesn’t capture wing symmetry, point sharpness or culet centring in enough detail to predict visual performance. Physical or video inspection alongside the certificate is worth doing for elongated cuts.

A Dutch Marquise typically has a fuller, rounder outline and a higher crown compared to a standard marquise, which is cut with a flatter profile and sharper points. The difference is in proportion and shaping style rather than the underlying cutting method.

Solitaire and hidden-halo settings are common choices, as they keep focus on the stone’s outline. East-west settings, where the stone sits horizontally rather than point-to-point along the finger, are also used to highlight the fuller shape.

It can be used for any setting. The fuller outline and higher crown often work well in earrings and pendants, where the stone is viewed face-on rather than from the side.

Buying through a dedicated diamond team, rather than a general jeweller, gives access to stones checked individually for wing symmetry, point sharpness and culet centring rather than judged on certificate grade alone. At Flawless Fine Jewellery, our team sources and inspects each Dutch Marquise stone directly at our Hatton Garden, London showroom, with a further showroom in Manchester, and stones can be viewed in person at either location or by video consultation before purchase.