The Carat Standard

GIA report 2536878644

3.00 ct Cushion Diamond

58/100 · Investigate

The report asks for a more careful visual review.

What reads well

  • A 1.01:1 length-to-width ratio sits in the classic cushion range.
  • F color is in the colorless range.
  • No fluorescence: no haze risk to weigh.

What deserves a closer look

  • SI2 is often not eye-clean in a cushion; 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.
  • Very thin to very thick girdle: a very thin edge raises chipping risk (thicker points are common in fancy shapes).
  • 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 61%, the table sits within the typical 56–66% range for a cushion, balancing brightness with fire.
Total depth · Closer look
69.4% is deeper than typical for a cushion (61–69%). Extra depth holds weight below the girdle, so the stone can face up smaller than its carat weight suggests.
Length-to-width · Ideal
A 1.01:1 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 · Favorable
Very Good symmetry is a fine result; the difference from Excellent is rarely visible without magnification.
Girdle · Closer look
Very thin to very thick, faceted: thin sections of girdle are more vulnerable to chipping. A setting that protects the edge is sensible.
Culet · Ideal
None: no visible culet facet when viewed face-up.
Color · Ideal
F is in the colorless range and faces up white in any metal.
Clarity · Closer look
SI2: inclusions may be visible to the eye. Confirm with images or video before buying.
Fluorescence · Ideal
None: no meaningful effect on appearance.

What to check on the exact stone

  • With 69.4% depth, does this stone face up smaller than a typical 3.00 ct cushion?
  • 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?
  • 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
F
Clarity
SI2
Measurements
7.90 × 7.84 × 5.44 mm
Table
61%
Total depth
69.4%
Crown angle
Not given for this shape
Pavilion angle
Not given for this shape
Polish
Excellent
Symmetry
Very Good
Girdle
Very thin to very thick, faceted
Culet
None
Fluorescence
None

About The Carat Standard Score

How The Carat Standard reads a report