The Carat Standard

IGI report LG830658909

1.50 ct Round Brilliant Laboratory-Grown Diamond

84/100 · Refined

A strong, composed candidate on paper.

What reads well

  • The IGI Excellent cut grade corroborates the measured proportions.
  • Excellent polish and symmetry, the top finish grades.
  • F 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

  • Crown 36.2° / pavilion 41.6° fall outside the pairing zone associated with strong light return.
  • 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 the center turn dark or lose sparkle when you tilt the diamond face-up?
  • 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
1.50 ct
Shape
Round Brilliant
Color
F
Clarity
VVS2
Cut
Excellent
Measurements
7.25–7.29 × 4.56 mm
Table
60%
Depth
62.8%
Crown angle
36.2°
Pavilion angle
41.6°
Girdle
Medium to slightly thick (faceted)
Culet
Pointed
Polish
Excellent
Symmetry
Excellent
Fluorescence
None

How The Carat Standard reads a report