1.50 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

• The measured proportions do not match the Excellent cut grade; recheck the report data.
• Crown 31.9° / pavilion 40.1° fall outside the pairing zone associated with strong light return.
• Table 61% and depth 57.5% sit 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.

What to check on the exact stone

• Does a gray ring or glassy patch show around the center when you look straight down?
• With a shallow 57.5% depth, can you see a glassy, see-through patch in the center?
• 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?

Report facts

Origin

Laboratory-grown

Carat

1.50 ct

Shape

Round Brilliant

Color

E

Clarity

VS1

Cut

Excellent

Measurements

7.50–7.53 × 4.32 mm

Table

61%

Depth

57.5%

Crown angle

31.9°

Pavilion angle

40.1°

Girdle

Medium to slightly thick (faceted)

Culet

Pointed

Polish

Excellent

Symmetry

Excellent

Fluorescence

None