IGI report LG751511037

3.09 ct Emerald Laboratory-Grown Diamond

82/100 · Considered

A balanced profile with a few questions to carry forward.

What reads well

SI1 in an emerald cut: the open step-cut table makes inclusions easier to see. View an image or video of this exact stone.
G color in a 3.09 ct emerald cut may show some warmth, especially at the corners.
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 61%, the table sits within the typical 60–69% range for an emerald cut, balancing brightness with fire.
Total depth · Closer look: 69.6% is deeper than typical for an emerald cut (60–69%). Extra depth holds weight below the girdle, so the stone can face up smaller than its carat weight suggests.
Length-to-width · Ideal: A 1.38:1 outline is within the classic 1.3–1.5:1 range for an emerald cut.
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 · Favorable: G is near-colorless and faces up white in most settings, though an emerald cut can show a hint of warmth at the corners.
Clarity · Closer look: SI1 in a step cut often shows inclusions through the open table. Confirm eye-cleanliness with images or video.
Fluorescence · Ideal: None: no meaningful effect on appearance.

With 69.6% depth, does this stone face up smaller than a typical 3.09 ct emerald?
Step cuts show inclusions openly—is this SI1 diamond eye-clean through the table from about 10 inches away?
Does this CVD diamond show any brown or gray undertone face-up in daylight?
Can you show me the inscribed report number under a loupe before it is set?