The Carat Standard

IGI report LG787624937

3.11 ct Pear Laboratory-Grown Diamond

89/100 · Refined

A strong candidate on paper; confirm its light pattern in imagery.

What reads well

  • A 1.54:1 length-to-width ratio sits in the classic pear range.
  • Face-up spread (12.32 × 7.99 mm) is typical or better for a 3.11 ct pear.
  • Table 53% and depth 62.8% fall in the typical pear range.
  • Excellent polish and symmetry, the top finish grades.
  • E color is in the colorless range.

What deserves a closer look

  • Large culet may be visible face-up as a small dark or open point.
  • Screening only: for this pear, check images or video of the exact stone for the bow-tie, even shoulders and a point that lines up with the centre of the rounded end.
  • 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 · Ideal
At 53%, the table sits within the typical 53–63% range for a pear, balancing brightness with fire.
Total depth · Ideal
62.8% is within the typical 58–64% range for a pear, keeping weight where it contributes to face-up size and light return.
Length-to-width · Ideal
A 1.54:1 outline is within the classic 1.45–1.75:1 range for a pear.
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 · Closer look
A large culet can show face-up as a small dark or open circle at the center.
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.

What to check on the exact stone

  • In a face-up video, does the bow-tie flicker as the stone tilts, or stay a fixed dark band across the center?
  • Will the ring setting use a protective V-tip prong or bezel to safeguard the delicate point?
  • Is the culet visible as a small dark or open point when you look straight down through the center?
  • Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin
Laboratory-grown
Carat
3.11 ct
Shape
Pear
Color
E
Clarity
VS1
Cut
Not stated
Measurements
12.32 × 7.99 × 5.02 mm
Table
53%
Depth
62.8%
Crown angle
Not stated
Pavilion angle
Not stated
Girdle
Medium to slightly thick (faceted)
Culet
Large
Polish
Excellent
Symmetry
Excellent
Fluorescence
None

About The Carat Standard Score

How The Carat Standard reads a report