IGI report LG827611398

0.91 ct Square Cushion Laboratory-Grown Diamond

82/100 · Considered

A balanced profile with a few questions to carry forward.

What reads well

SI2 is often not eye-clean in a cushion; view an image or video of this exact stone.
The depth 59.4% sits outside the typical cushion range.
Face-up area is unusually large for the weight, which can indicate a shallow cut with a see-through window.
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.

Table · Ideal: At 61%, the table sits within the typical 56–66% range for a cushion, balancing brightness with fire.
Total depth · Closer look: 59.4% is shallower than typical for a cushion (61–69%). That spreads the stone face-up but raises the risk of windowing — a glassy, see-through center.
Length-to-width · Ideal: A 1.04:1 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 · Ideal: Medium to slightly 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: D 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.

With a shallow 59.4% depth, can you see a glassy, see-through patch in the center?
Is this SI2 diamond eye-clean face-up from about 10 inches away?
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?