The Carat Standard

IGI report LG786692081

1.48 ct Round Brilliant Laboratory-Grown Diamond

96/100 · Signature

An unusually disciplined report profile.

What reads well

  • Crown 35.6° with pavilion 40.7° sits in the well-regarded pairing zone for brightness and fire.
  • Table 56% and depth 61.9% are within the classic round brilliant range.
  • The IGI Ideal cut grade corroborates the measured proportions.
  • Excellent polish and symmetry, the top finish grades.
  • E color is in the colorless range.

The reading, field by field

Table · Ideal
At 56%, the table sits within the typical 53–59% range for a round brilliant, balancing brightness with fire.
Total depth · Ideal
61.9% 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
35.6° sits in the 32–36° zone where crown angles typically balance fire and brightness.
Pavilion angle · Ideal
40.7° 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 (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 · Ideal
VVS1: inclusions, if any, are only visible under magnification.
Fluorescence · Ideal
None: no meaningful effect on appearance.
Cut grade · Ideal
Ideal 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 this HPHT-grown diamond look neutral white beside another stone in daylight, with no gray or blue cast?
  • Can I see this stone in soft daylight away from store spotlights to verify its sparkle?
  • Does the sparkle look bright and even all the way out to the edges?
  • Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin
Laboratory-grown
Carat
1.48 ct
Shape
Round Brilliant
Color
E
Clarity
VVS1
Cut
Ideal
Measurements
7.29–7.35 × 4.53 mm
Table
56%
Depth
61.9%
Crown angle
35.6°
Pavilion angle
40.7°
Girdle
Medium (faceted)
Culet
Pointed
Polish
Excellent
Symmetry
Excellent
Fluorescence
None

About The Carat Standard Score

How The Carat Standard reads a report