IGI report LG782640331
4.09 ct Heart Laboratory-Grown Diamond
90/100 · Refined
A strong candidate on paper; confirm its light pattern in imagery.
What reads well
- A 0.90:1 length-to-width ratio sits in the classic heart range.
- Face-up spread (9.90 × 10.97 mm) is typical or better for a 4.09 ct heart.
- Table 61% and depth 60.3% fall in the typical heart range.
- Excellent polish and symmetry, the top finish grades.
- E color is in the colorless range.
What deserves a closer look
- The stated 60.3% depth does not match the measurements (about 66.9%). Check the report data.
- Screening only: for this heart, check images or video of the exact stone for even lobes, a crisp cleft and a point that lines up below it.
- 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 61%, the table sits within the typical 53–63% range for a heart, balancing brightness with fire.
- Total depth · Ideal
- 60.3% is within the typical 56–63% range for a heart, keeping weight where it contributes to face-up size and light return.
- Length-to-width · Favorable
- A 1.11:1 outline is longer and slimmer than the classic 0.9–1.1:1 range for a heart — 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 to slightly thick (faceted): a durable girdle thickness that doesn't hide meaningful weight.
- Culet · Ideal
- Pointed: no visible culet facet when viewed face-up.
- Color · Ideal
- E 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
- 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
- 4.09 ct
- Shape
- Heart
- Cut grade
- Not given for this shape
- Color
- E
- Clarity
- VVS2
- Measurements
- 9.90 × 10.97 × 6.62 mm
- Table
- 61%
- Total depth
- 60.3%
- Crown angle
- Not given for this shape
- Pavilion angle
- Not given for this shape
- Polish
- Excellent
- Symmetry
- Excellent
- Girdle
- Medium to slightly thick (faceted)
- Culet
- Pointed
- Fluorescence
- None