The Carat Standard

IGI report LG772674260

3.00 ct Asscher Laboratory-Grown Diamond

76/100 · Considered

A balanced profile with a few questions to carry forward.

What reads well

  • A 1.02:1 length-to-width ratio sits in the classic Asscher / square emerald range.
  • Face-up spread (7.81 × 7.64 mm) is typical or better for a 3.00 ct Asscher / square emerald.
  • 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

  • A 71.3% depth is deep for a step cut: weight sits below the girdle and the stone faces up smaller.
  • A 74% table is very large for a step cut, which can flatten the hall-of-mirrors effect.
  • Screening only: for this Asscher / square emerald, check images or video of the exact stone for the concentric "hall of mirrors", the windmill pattern at the corners and any see-through window.
  • 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 · Closer look
A 74% table is larger than typical for an Asscher / square emerald (58–68%). Large tables can read bright but flatter, with less fire and contrast.
Total depth · Closer look
71.3% is deeper than typical for an Asscher / square emerald (60–70%). Extra depth holds weight below the girdle, so the stone can face up smaller than its carat weight suggests.
Length-to-width · Ideal
A 1.02:1 outline is within the classic 1–1.05:1 range for an Asscher / square emerald.
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: 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
VVS2: inclusions, if any, are only visible under magnification.
Fluorescence · Ideal
None: no meaningful effect on appearance.

What to check on the exact stone

  • With 71.3% depth, does this stone face up smaller than a typical 3.00 ct asscher?
  • Can you see straight through the center (windowing), or does it reflect clean steps?
  • With open step facets, is the center completely eye-clean without any visible dark marks?
  • Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin
Laboratory-grown
Carat
3.00 ct
Shape
Asscher
Cut grade
Not given for this shape
Color
E
Clarity
VVS2
Measurements
7.81 × 7.64 × 5.45 mm
Table
74%
Total depth
71.3%
Crown angle
Not given for this shape
Pavilion angle
Not given for this shape
Polish
Excellent
Symmetry
Excellent
Girdle
Slightly thick
Culet
Pointed
Fluorescence
None

About The Carat Standard Score

How The Carat Standard reads a report