1.50 ct Marquise Diamond

What reads well

• A 1.92:1 length-to-width ratio sits in the classic marquise range.
• Face-up spread (11.38 × 5.92 mm) is typical or better for a 1.50 ct marquise.
• Table 61% and depth 62.7% fall in the typical marquise range.
• Excellent polish and symmetry, the top finish grades.
• Faint fluorescence: no haze risk to weigh.

What deserves a closer look

• SI2 is often not eye-clean in a marquise; view an image or video of this exact stone.
• Clouds are referenced on the report; confirm the stone looks transparent rather than hazy.
• Surface-reaching characteristics are listed (cavity); check their position on the plot for durability.
• Medium to very thick girdle: a thick girdle carries hidden weight and can reduce face-up size (thicker points are common in fancy shapes).
• Screening only: for this marquise, check images or video of the exact stone for the bow-tie and whether the two points line up end to end.

The reading, field by field

Table · Ideal

At 61%, the table sits within the typical 53–63% range for a marquise, balancing brightness with fire.

Total depth · Ideal

62.7% is within the typical 58–64% range for a marquise, keeping weight where it contributes to face-up size and light return.

Length-to-width · Ideal

A 1.92:1 outline is within the classic 1.85–2.2:1 range for a marquise.

Polish · Ideal

Excellent polish is the top finish grade — facets are cleanly executed with nothing that would soften sparkle.

Symmetry · Ideal

Excellent symmetry is the top finish grade — facets are cleanly executed with nothing that would soften sparkle.

Girdle · Closer look

Medium to very thick, faceted: a thick girdle carries weight in the rim, so the stone can face up a little smaller for its carat weight. It is durable, though.

Culet · Ideal

None: no visible culet facet when viewed face-up.

Color · Favorable

J may show slight warmth at the points of a marquise, especially next to white metal. Yellow or rose gold tends to complement it.

Clarity · Closer look

SI2: inclusions may be visible to the eye. Confirm with images or video before buying.

Fluorescence · Ideal

Faint: no meaningful effect on appearance.

What to check on the exact stone

• Does the diamond look crisp and transparent in natural light, or is there any milky haze?
• Does the feather reach the outer edge where a setting prong could put pressure on it?
• Is the surface opening protected by a prong, or could it catch lint and risk chipping?
• Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin

Natural

Carat

1.50 ct

Shape

Marquise

Cut grade

Not given for this shape

Color

J

Clarity

SI2

Measurements

11.38 × 5.92 × 3.71 mm

Table

61%

Total depth

62.7%

Crown angle

Not given for this shape

Pavilion angle

Not given for this shape

Polish

Excellent

Symmetry

Excellent

Girdle

Medium to very thick, faceted

Culet

None

Fluorescence

Faint