IGI report LG782683660

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 × 7.04 mm) is typical or better for a 3.51 ct emerald cut.
Excellent polish and symmetry, the top finish grades.
D color is in the colorless range.
IF clarity: inclusions are not a practical visual factor.
No fluorescence: no haze risk to weigh.

A 1.54:1 length-to-width ratio is outside the classic emerald cut range; the outline will look more elongated than typical.
The table 57% sits outside the typical emerald cut range.
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.

Table · Favorable: A 57% table is smaller than typical for an emerald cut (60–69%). Smaller tables tend to favor fire over broad, flat brightness.
Total depth · Ideal: 63.9% 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 1.54:1 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 · 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: 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 · Ideal: Internally Flawless (IF): inclusions, if any, are only visible under magnification.
Fluorescence · Ideal: None: no meaningful effect on appearance.
Cut grade · Ideal: Excellent as issued by IGI, on IGI's own scale. The measured proportions above tell you more than the label.

With open step facets, is the center completely eye-clean without any visible dark marks?
Does this HPHT-grown diamond look neutral white beside another stone in daylight, with no gray or blue cast?
Can you show me the inscribed report number under a loupe before it is set?