IGI report LG790680004
3.00 ct Radiant Laboratory-Grown Diamond
88/100 · Refined
A strong candidate on paper; confirm its light pattern in imagery.
What reads well
- A 1.43:1 length-to-width ratio sits in the classic radiant range.
- Face-up spread (10.07 × 7.03 mm) is typical or better for a 3.00 ct radiant.
- VS1 clarity is typically eye-clean in a radiant.
- No fluorescence: no haze risk to weigh.
- Medium to slightly thick girdle balances durability and weight retention.
What deserves a closer look
- The table 72% sits outside the typical radiant range.
- G color in a 3.00 ct radiant may show some warmth, especially at the corners.
- Screening only: for this radiant, check images or video of the exact stone for the sparkle pattern (defined flashes or "crushed ice") and any dark or see-through 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 · Closer look
- A 72% table is larger than typical for a radiant (60–70%). Large tables can read bright but flatter, with less fire and contrast.
- Total depth · Ideal
- 66.1% is within the typical 61–68% range for a radiant, keeping weight where it contributes to face-up size and light return.
- Length-to-width · Ideal
- A 1.43:1 outline is within the classic 1.2–1.5:1 range for a radiant.
- 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 to slightly thick: a durable girdle thickness that doesn't hide meaningful weight.
- Culet · Ideal
- Pointed: no visible culet facet when viewed face-up.
- Color · Favorable
- G is near-colorless and faces up white in most settings, though a radiant can show a hint of warmth at the corners.
- Clarity · Favorable
- VS1 is typically eye-clean.
- Fluorescence · Ideal
- None: no meaningful effect on appearance.
What to check on the exact stone
- Does the large table look bright but flat, with less colored fire than you expected?
- 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
- 3.00 ct
- Shape
- Radiant
- Cut grade
- Not given for this shape
- Color
- G
- Clarity
- VS1
- Measurements
- 10.07 × 7.03 × 4.65 mm
- Table
- 72%
- Total depth
- 66.1%
- Crown angle
- Not given for this shape
- Pavilion angle
- Not given for this shape
- Polish
- Very Good
- Symmetry
- Very Good
- Girdle
- Medium to slightly thick
- Culet
- Pointed
- Fluorescence
- None