IGI report LG769670860

3.51 ct Emerald Laboratory-Grown Diamond

89/100 · Refined

A strong candidate on paper; confirm its light pattern in imagery.

What reads well

Face-up spread (10.83 × 7.11 mm) is typical or better for a 3.51 ct emerald cut.
Table 69% and depth 61.2% fall in the typical emerald cut range.
D color is in the colorless range.
VS1 clarity is typically eye-clean in an emerald cut.
No fluorescence: no haze risk to weigh.

A 1.52:1 length-to-width ratio is outside the classic emerald cut range; the outline will look more elongated than typical.
Screening only: for this emerald cut, check images or video of the exact stone for the "hall of mirrors" step pattern, any see-through window under the table and clean corners.
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 69%, the table sits within the typical 60–69% range for an emerald cut, balancing brightness with fire.
Total depth · Ideal: 61.2% is within the typical 60–69% range for an emerald cut, keeping weight where it contributes to face-up size and light return.
Length-to-width · Favorable: A 1.52:1 outline is longer and slimmer than the classic 1.3–1.5:1 range for an emerald cut — a matter of taste, but worth seeing in person.
Polish · Favorable: Very Good polish is a fine result; the difference from Excellent is rarely visible without magnification.
Symmetry · Ideal: Excellent symmetry is the top finish grade — facets are cleanly executed with nothing that would soften sparkle.
Girdle · Ideal: Medium: a durable girdle thickness that doesn't hide meaningful weight.
Culet · Ideal: Long: a keel-line culet, normal for elongated step and modified cuts.
Color · Ideal: D is in the colorless range and faces up white in any metal.
Clarity · Favorable: VS1 is typically eye-clean, though step cuts show inclusions more readily — worth a close look at the images.
Fluorescence · Ideal: None: no meaningful effect on appearance.

With open step facets, is the center completely eye-clean without any visible dark marks?
Does this CVD diamond show any brown or gray undertone face-up in daylight?
With Very Good polish, are there visible surface polish lines or wheel marks?
Can you show me the inscribed report number under a loupe before it is set?