IGI report LG762578162
3.03 ct Emerald Laboratory-Grown Diamond
85/100 · Refined
A strong candidate on paper; confirm its light pattern in imagery.
What reads well
- Face-up spread (10.49 × 6.36 mm) is typical or better for a 3.03 ct emerald cut.
- Excellent polish and symmetry, the top finish grades.
- VS1 clarity is typically eye-clean in an emerald cut.
- No fluorescence: no haze risk to weigh.
- Medium girdle balances durability and weight retention.
What deserves a closer look
- A 1.65:1 length-to-width ratio is outside the classic emerald cut range; the outline will look more elongated than typical.
- A 70.6% depth is deep for a step cut: weight sits below the girdle and the stone faces up smaller.
- H color in a 3.03 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.
The reading, field by field
- Table · Ideal
- At 67%, the table sits within the typical 60–69% range for an emerald cut, balancing brightness with fire.
- Total depth · Closer look
- 70.6% 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 · Favorable
- A 1.65:1 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 · Favorable
- H is near-colorless and faces up white in most settings, though an emerald cut can show a hint of warmth at the corners.
- 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.
What to check on the exact stone
- With 70.6% depth, does this stone face up smaller than a typical 3.03 ct emerald?
- 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?
- Can you show me the inscribed report number under a loupe before it is set?
Report facts
- Origin
- Laboratory-grown
- Carat
- 3.03 ct
- Shape
- Emerald
- Cut grade
- Not given for this shape
- Color
- H
- Clarity
- VS1
- Measurements
- 10.49 × 6.36 × 4.49 mm
- Table
- 67%
- Total depth
- 70.6%
- Crown angle
- Not given for this shape
- Pavilion angle
- Not given for this shape
- Polish
- Excellent
- Symmetry
- Excellent
- Girdle
- Medium
- Culet
- Long
- Fluorescence
- None