IGI report LG790698806
1.15 ct Emerald Laboratory-Grown Diamond
90/100 · Refined
A strong candidate on paper; confirm its light pattern in imagery.
What reads well
- A 1.38:1 length-to-width ratio sits in the classic emerald cut range.
- Face-up spread (6.89 × 4.99 mm) is typical or better for a 1.15 ct emerald cut.
- Table 64% and depth 67.9% fall in the typical emerald cut range.
- Excellent polish and symmetry, the top finish grades.
- D color is in the colorless range.
What deserves a closer look
- 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 64%, the table sits within the typical 60–69% range for an emerald cut, balancing brightness with fire.
- Total depth · Ideal
- 67.9% 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 · 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 · Ideal
- D is in the colorless range and faces up white in any metal.
- Clarity · Ideal
- VVS2: inclusions, if any, are only visible under magnification.
- Fluorescence · Ideal
- None: no meaningful effect on appearance.
What to check on the exact stone
- 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
- 1.15 ct
- Shape
- Emerald
- Color
- D
- Clarity
- VVS2
- Cut
- Not stated
- Measurements
- 6.89 × 4.99 × 3.39 mm
- Table
- 64%
- Depth
- 67.9%
- Crown angle
- Not stated
- Pavilion angle
- Not stated
- Girdle
- Medium
- Culet
- Long
- Polish
- Excellent
- Symmetry
- Excellent
- Fluorescence
- None