IGI report LG766650058

2.50 ct Round Brilliant Laboratory-Grown Diamond

90/100 · Refined

A strong, composed candidate on paper.

What reads well

Crown 34.2° with pavilion 41° sits in the well-regarded pairing zone for brightness and fire.
Excellent polish and symmetry, the top finish grades.
F color is in the colorless range.
VS1 clarity is typically eye-clean in a round brilliant.
No fluorescence: no haze risk to weigh.

Treatment status is not stated on the report. For a laboratory-grown diamond, ask whether it is as-grown or post-growth treated.
Not stated on the report: cut grade. This is not assumed to be favorable, and confidence is lower.

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: 60.6% 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: 34.2° sits in the 32–36° zone where crown angles typically balance fire and brightness.
Pavilion angle · Ideal: 41° is inside the narrow 40.5–41.3° zone where the pavilion returns light most efficiently.
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: F 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.

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 I see this stone in soft daylight away from store spotlights to verify its sparkle?
Can you show me the inscribed report number under a loupe before it is set?