IGI report LG785607353
2.58 ct Round Brilliant Laboratory-Grown Diamond
89/100 · Refined
A strong, composed candidate on paper.
What reads well
- The IGI Excellent cut grade corroborates the measured proportions.
- Excellent polish and symmetry, the top finish grades.
- D color is in the colorless range.
- VS1 clarity is typically eye-clean in a round brilliant.
- No fluorescence: no haze risk to weigh.
What deserves a closer look
- Crown 35.1° / pavilion 41.4° fall outside the pairing zone associated with strong light return.
- 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 59%, the table sits within the typical 53–59% range for a round brilliant, balancing brightness with fire.
- Total depth · Ideal
- 62.7% 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 · Ideal
- 35.1° sits in the 32–36° zone where crown angles typically balance fire and brightness.
- Pavilion angle · Closer look
- 41.4° is steeper than the narrow 40.5–41.3° zone. Deep pavilions can leak light through the sides and darken the center.
- 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
- D 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 · Ideal
- Excellent 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 the center turn dark or lose sparkle when you tilt the diamond face-up?
- 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
- 2.58 ct
- Shape
- Round Brilliant
- Color
- D
- Clarity
- VS1
- Cut
- Excellent
- Measurements
- 8.68–8.74 × 5.47 mm
- Table
- 59%
- Depth
- 62.7%
- Crown angle
- 35.1°
- Pavilion angle
- 41.4°
- Girdle
- Medium to slightly thick (faceted)
- Culet
- Pointed
- Polish
- Excellent
- Symmetry
- Excellent
- Fluorescence
- None