IGI report LG772683663
1.06 ct Round Brilliant Laboratory-Grown Diamond
84/100 · Refined
A strong, composed candidate on paper.
What reads well
- E color is in the colorless range.
- VS1 clarity is typically eye-clean in a round brilliant.
- No fluorescence: no haze risk to weigh.
- The report states no indication of post-growth treatment.
What deserves a closer look
- Crown 37° / pavilion 40.1° fall outside the pairing zone associated with strong light return.
The reading, field by field
- Table · Closer look
- A 60% table is larger than typical for a round brilliant (53–59%). Large tables can read bright but flatter, with less fire and contrast.
- Total depth · Ideal
- 62.3% is within the typical 59.5–63% range for a round brilliant, keeping weight where it contributes to face-up size and light return.
- Crown angle · Closer look
- A 37° crown is steeper than the typical 32–36° zone. Steep crowns can add fire, but only pair well with a slightly shallower pavilion.
- Pavilion angle · Closer look
- 40.1° is shallower than the narrow 40.5–41.3° zone. Shallow pavilions can let light pass straight through, looking glassy.
- Polish · Favorable
- Very Good polish is a fine result; the difference from Excellent is rarely visible without magnification.
- Symmetry · Favorable
- Very Good symmetry is a fine result; the difference from Excellent is rarely visible without magnification.
- Girdle · Favorable
- Slightly thick to thick (faceted): durable, on the thicker side for a round brilliant, so a little weight sits in the rim.
- 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 · Favorable
- VS1 is typically eye-clean.
- Fluorescence · Ideal
- None: no meaningful effect on appearance.
- Cut grade · Favorable
- Very Good as issued by IGI, on IGI's own scale. The measured proportions above tell you more than the label.
What to check on the exact stone
- Does a gray ring or glassy patch show around the center when you look straight down?
- Does the large table look bright but flat, with less colored fire than you expected?
- 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?
Report facts
- Origin
- Laboratory-grown
- Carat
- 1.06 ct
- Shape
- Round Brilliant
- Cut grade
- Very Good (IGI)
- Color
- E
- Clarity
- VS1
- Measurements
- 6.35–6.41 × 3.98 mm
- Table
- 60%
- Total depth
- 62.3%
- Crown angle
- 37°
- Pavilion angle
- 40.1°
- Polish
- Very Good
- Symmetry
- Very Good
- Girdle
- Slightly thick to thick (faceted)
- Culet
- Pointed
- Fluorescence
- None