3.00 ct Cushion Diamond

What reads well

• A 1.07:1 length-to-width ratio sits in the classic cushion range.
• Face-up spread (8.29 × 7.77 mm) is typical or better for a 3.00 ct cushion.
• Table 60% and depth 67.9% fall in the typical cushion range.
• Excellent polish and symmetry, the top finish grades.

What deserves a closer look

• SI2 is often not eye-clean in a cushion; view an image or video of this exact stone.
• Surface-reaching characteristics are listed (cavity, knot); check their position on the plot for durability.
• Thin to very thick girdle: a thick girdle carries hidden weight and can reduce face-up size (thicker points are common in fancy shapes).
• Feathers are listed: check the plot for any that reach the girdle or surface, which matters for durability.
• Screening only: for this cushion, check images or video of the exact stone for the facet pattern (bold, chunky flashes or finer "crushed ice") and any dark areas under the table.

The reading, field by field

Table · Ideal

At 60%, the table sits within the typical 56–66% range for a cushion, balancing brightness with fire.

Total depth · Ideal

67.9% is within the typical 61–69% range for a cushion, keeping weight where it contributes to face-up size and light return.

Length-to-width · Ideal

A 1.07:1 outline is within the classic 1–1.35:1 range for a cushion.

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

Thin 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

H is near-colorless and faces up white in most settings.

Clarity · Closer look

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

Fluorescence · Favorable

Strong Blue fluorescence can make an H stone look whiter in daylight; it is rarely a problem at this color.

What to check on the exact stone

• 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?
• Is this SI2 diamond eye-clean face-up from about 10 inches away?
• Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin

Natural

Carat

3.00 ct

Shape

Cushion

Cut grade

Not given for this shape

Color

H

Clarity

SI2

Measurements

8.29 × 7.77 × 5.28 mm

Table

60%

Total depth

67.9%

Crown angle

Not given for this shape

Pavilion angle

Not given for this shape

Polish

Excellent

Symmetry

Excellent

Girdle

Thin to very thick, faceted

Culet

None

Fluorescence

Strong Blue