The Carat Standard

IGI report LG784686327

3.01 ct Old European Laboratory-Grown Diamond

90/100 · Refined

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

What reads well

  • Face-up spread (9.03 × 9.08 mm) is typical or better for a 3.01 ct Old European cut.
  • Table 51% and depth 62.6% fall in the typical Old European cut range.
  • Excellent polish and symmetry, the top finish grades.
  • E color is in the colorless range.
  • VVS2 clarity: inclusions are not a practical visual factor.

What deserves a closer look

  • Screening only: for this Old European cut, check images or video of the exact stone for the broad, chunky antique flash pattern and how the open culet looks face-up.
  • 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 51%, the table sits within the typical 45–56% range for an Old European cut, balancing brightness with fire.
Total depth · Ideal
62.6% is within the typical 57–66% range for an Old European cut, keeping weight where it contributes to face-up size and light return.
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
Slightly Thick (Faceted): a durable girdle thickness that doesn't hide meaningful weight.
Culet · Ideal
Large: the open culet traditional to an Old European cut, seen face-up as a small circle at the center and part of its antique character.
Color · Ideal
E is in the colorless range and faces up white in any metal.
Clarity · Ideal
VVS2: inclusions, if any, are only visible under magnification.
Fluorescence · Ideal
None: no meaningful effect on appearance.

What to check on the exact stone

  • Does it show the broad, chunky flashes of an antique cut, and how much does the open culet show face-up?
  • 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
3.01 ct
Shape
Old European
Color
E
Clarity
VVS2
Cut
Not stated
Measurements
9.03–9.08 × 5.67 mm
Table
51%
Depth
62.6%
Crown angle
34.8°
Pavilion angle
41°
Girdle
Slightly thick (faceted)
Culet
Large
Polish
Excellent
Symmetry
Excellent
Fluorescence
None

About The Carat Standard Score

How The Carat Standard reads a report