IGI report LG776677240
1.53 ct Princess Laboratory-Grown Diamond
89/100 · Refined
A strong candidate on paper; confirm its light pattern in imagery.
What reads well
- A 1.04:1 length-to-width ratio sits in the classic princess range.
- Face-up spread (6.46 × 6.21 mm) is typical or better for a 1.53 ct princess.
- Table 74% and depth 72.3% fall in the typical princess range.
- E color is in the colorless range.
- VS1 clarity is typically eye-clean in a princess.
What deserves a closer look
- Screening only: for this princess, check images or video of the exact stone for dark areas across the corners or a see-through centre.
- 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 74%, the table sits within the typical 63–74% range for a princess, balancing brightness with fire.
- Total depth · Ideal
- 72.3% is within the typical 64–75% range for a princess, keeping weight where it contributes to face-up size and light return.
- Length-to-width · Ideal
- A 1.04:1 outline is within the classic 1–1.05:1 range for a princess.
- 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 · Ideal
- Medium: 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 · Favorable
- VS1 is typically eye-clean.
- Fluorescence · Ideal
- None: no meaningful effect on appearance.
What to check on the exact stone
- Will all four sharp corners be seated safely in V-prongs to prevent corner fractures?
- Does this CVD diamond show any brown or gray undertone face-up in daylight?
- With Very Good polish and Very Good symmetry, are there visible misaligned facets or wheel marks?
- Can you show me the inscribed report number under a loupe before it is set?
Report facts
- Origin
- Laboratory-grown
- Carat
- 1.53 ct
- Shape
- Princess
- Cut grade
- Not given for this shape
- Color
- E
- Clarity
- VS1
- Measurements
- 6.46 × 6.21 × 4.49 mm
- Table
- 74%
- Total depth
- 72.3%
- Crown angle
- Not given for this shape
- Pavilion angle
- Not given for this shape
- Polish
- Very Good
- Symmetry
- Very Good
- Girdle
- Medium
- Culet
- Pointed
- Fluorescence
- None