4.00 ct Square Cushion Laboratory-Grown Diamond

What reads well

• A 1.02:1 length-to-width ratio sits in the classic cushion range.
• Excellent polish and symmetry, the top finish grades.
• D color is in the colorless range.
• IF clarity: inclusions are not a practical visual factor.
• No fluorescence: no haze risk to weigh.

What deserves a closer look

• The depth 71.1% sits outside the typical cushion range.
• Face-up area is about 12% below typical cushions of this weight, suggesting hidden weight in depth.
• Slightly thick 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: bow-tie, windowing and contrast in a cushion can only be judged from images or video of this exact stone.

What to check on the exact stone

• With 71.1% depth, does this stone face up smaller than a typical 4.00 ct square?
• Does this cushion produce broad, chunky flashes or small needle-like crushed-ice sparkle?
• Is extra carat weight trapped in the thick girdle rim where it does not add finger presence?
• Does this HPHT-grown diamond look neutral white beside another stone in daylight, with no gray or blue cast?

Report facts

Origin

Laboratory-grown

Carat

4.00 ct

Shape

Square Cushion

Color

D

Clarity

IF

Cut

Not stated

Measurements

9.15 × 8.94 × 6.36 mm

Table

58%

Depth

71.1%

Crown angle

Not stated

Pavilion angle

Not stated

Girdle

Slightly thick to very thick (faceted)

Culet

Pointed

Polish

Excellent

Symmetry

Excellent

Fluorescence

None