The Carat Standard

IGI report LG779637035

3.02 ct Emerald Laboratory-Grown Diamond

88/100 · Refined

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

What reads well

  • Face-up spread (10.03 × 6.58 mm) is typical or better for a 3.02 ct emerald cut.
  • Excellent polish and symmetry, the top finish grades.
  • D color is in the colorless range.
  • No fluorescence: no haze risk to weigh.
  • Medium girdle balances durability and weight retention.

What deserves a closer look

  • A 1.52:1 length-to-width ratio is outside the classic emerald cut range; the outline will look more elongated than typical.
  • VS2 in an emerald cut is usually eye-clean, but step cuts show inclusions more readily than brilliants; check the plot.
  • Screening only: for this emerald cut, check images or video of the exact stone for the "hall of mirrors" step pattern, any see-through window under the table and clean corners.
  • 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 68%, the table sits within the typical 60–69% range for an emerald cut, balancing brightness with fire.
Total depth · Closer look
69.6% is deeper than typical for an emerald cut (60–69%). Extra depth holds weight below the girdle, so the stone can face up smaller than its carat weight suggests.
Length-to-width · Favorable
A 1.52:1 outline is longer and slimmer than the classic 1.3–1.5:1 range for an emerald cut — a matter of taste, but worth seeing in person.
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: a durable girdle thickness that doesn't hide meaningful weight.
Culet · Ideal
Long: a keel-line culet, normal for elongated step and modified cuts.
Color · Ideal
D is in the colorless range and faces up white in any metal.
Clarity · Favorable
VS2 is typically eye-clean, though step cuts show inclusions more readily — worth a close look at the images.
Fluorescence · Ideal
None: no meaningful effect on appearance.

What to check on the exact stone

  • With 69.6% depth, does this stone face up smaller than a typical 3.02 ct emerald?
  • Step cuts show inclusions openly—is this VS2 diamond eye-clean through the table from about 10 inches away?
  • 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
3.02 ct
Shape
Emerald
Cut grade
Not given for this shape
Color
D
Clarity
VS2
Measurements
10.03 × 6.58 × 4.58 mm
Table
68%
Total depth
69.6%
Crown angle
Not given for this shape
Pavilion angle
Not given for this shape
Polish
Excellent
Symmetry
Excellent
Girdle
Medium
Culet
Long
Fluorescence
None

About The Carat Standard Score

How The Carat Standard reads a report