IGI report LG778688152
4.01 ct Cushion Laboratory-Grown Diamond
87/100 · Refined
A strong candidate on paper; confirm its light pattern in imagery.
What reads well
- F color is in the colorless range.
- VVS2 clarity: inclusions are not a practical visual factor.
- No fluorescence: no haze risk to weigh.
What deserves a closer look
- A 1.41:1 length-to-width ratio is outside the classic cushion range; the outline will look more elongated than typical.
- 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.
- Treatment status is not stated on the report. For a laboratory-grown diamond, ask whether it is as-grown or post-growth treated.
The reading, field by field
- Table · Closer look
- A 67% table is larger than typical for a cushion (56–66%). Large tables can read bright but flatter, with less fire and contrast.
- 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 · Favorable
- A 1.41:1 outline is longer and slimmer than the classic 1–1.35:1 range for a cushion — a matter of taste, but worth seeing in person.
- 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 · Ideal
- Medium to thick (faceted): a durable girdle thickness that doesn't hide meaningful weight.
- Culet · Ideal
- Pointed: no visible culet facet when viewed face-up.
- Color · Ideal
- F is in the colorless range and faces up white in any metal.
- Clarity · Ideal
- VVS2: inclusions, if any, are only visible under magnification.
- 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 4.01 ct cushion?
- Does the large table look bright but flat, with less colored fire than you expected?
- Does this cushion produce broad, chunky flashes or small needle-like crushed-ice sparkle?
- Can you show me the inscribed report number under a loupe before it is set?
Report facts
- Origin
- Laboratory-grown
- Carat
- 4.01 ct
- Shape
- Cushion
- Cut grade
- Not given for this shape
- Color
- F
- Clarity
- VVS2
- Measurements
- 10.80 × 7.68 × 5.33 mm
- Table
- 67%
- Total depth
- 69.4%
- Crown angle
- Not given for this shape
- Pavilion angle
- Not given for this shape
- Polish
- Excellent
- Symmetry
- Very Good
- Girdle
- Medium to thick (faceted)
- Culet
- Pointed
- Fluorescence
- None