3.00 ct Round Brilliant Laboratory-Grown Diamond

What reads well

• The IGI Excellent cut grade corroborates the measured proportions.
• Excellent polish and symmetry, the top finish grades.
• E 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 40.1° fall outside the pairing zone associated with strong light return.
• Table 62% sits outside the preferred round range.
• 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 62% 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

59.7% 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

40.1° is shallower than the narrow 40.5–41.3° zone. Shallow pavilions can let light pass straight through, looking glassy.

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

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.

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 a gray ring or glassy patch show around the center when you look straight down?
• 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

3.00 ct

Shape

Round Brilliant

Cut grade

Excellent (IGI)

Color

E

Clarity

VS1

Measurements

9.24–9.30 × 5.53 mm

Table

62%

Total depth

59.7%

Crown angle

35.1°

Pavilion angle

40.1°

Polish

Excellent

Symmetry

Excellent

Girdle

Medium to slightly thick (faceted)

Culet

Pointed

Fluorescence

None