The Carat Standard

IGI report LG784637089

2.50 ct Radiant Laboratory-Grown Diamond

90/100 · Refined

A strong candidate on paper; confirm its light pattern in imagery.

What reads well

  • Face-up spread (9.86 × 6.55 mm) is typical or better for a 2.50 ct radiant.
  • Excellent polish and symmetry, the top finish grades.
  • E color is in the colorless range.
  • VVS2 clarity: inclusions are not a practical visual factor.
  • No fluorescence: no haze risk to weigh.

What deserves a closer look

  • A 1.51:1 length-to-width ratio is outside the classic radiant range; the outline will look more elongated than typical.
  • 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 71% 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
66.9% 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 · Favorable
A 1.51:1 outline is longer and slimmer than the classic 1.2–1.5:1 range for a radiant — 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: 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 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?
  • Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin
Laboratory-grown
Carat
2.50 ct
Shape
Radiant
Color
E
Clarity
VVS2
Cut
Not stated
Measurements
9.86 × 6.55 × 4.38 mm
Table
71%
Depth
66.9%
Crown angle
Not stated
Pavilion angle
Not stated
Girdle
Medium to slightly thick
Culet
Pointed
Polish
Excellent
Symmetry
Excellent
Fluorescence
None

About The Carat Standard Score

How The Carat Standard reads a report