The Carat Standard

IGI report LG766629212

3.08 ct Heart Laboratory-Grown Diamond

89/100 · Refined

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

What reads well

  • A 0.90:1 length-to-width ratio sits in the classic heart range.
  • Face-up spread (9.10 × 10.08 mm) is typical or better for a 3.08 ct heart.
  • Table 58% and depth 59.8% fall in the typical heart range.
  • Excellent polish and symmetry, the top finish grades.
  • F color is in the colorless range.

What deserves a closer look

  • The stated 59.8% depth does not match the measurements (about 66.3%). Check the report data.
  • Screening only: for this heart, check images or video of the exact stone for even lobes, a crisp cleft and a point that lines up below it.
  • 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 58%, the table sits within the typical 53–63% range for a heart, balancing brightness with fire.
Total depth · Ideal
59.8% is within the typical 56–63% range for a heart, keeping weight where it contributes to face-up size and light return.
Length-to-width · Favorable
A 1.11:1 outline is longer and slimmer than the classic 0.9–1.1:1 range for a heart — 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
Thin to slightly thick (faceted): a durable girdle thickness that doesn't hide meaningful weight.
Culet · Ideal
Pointed: no visible culet facet when viewed face-up.
Color · Ideal
F is in the colorless range and faces up white in any metal.
Clarity · Favorable
VS2 is typically eye-clean.
Fluorescence · Ideal
None: no meaningful effect on appearance.

What to check on the exact stone

  • Is this VS2 diamond eye-clean face-up 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
3.08 ct
Shape
Heart
Cut grade
Not given for this shape
Color
F
Clarity
VS2
Measurements
9.10 × 10.08 × 6.03 mm
Table
58%
Total depth
59.8%
Crown angle
Not given for this shape
Pavilion angle
Not given for this shape
Polish
Excellent
Symmetry
Excellent
Girdle
Thin to slightly thick (faceted)
Culet
Pointed
Fluorescence
None

About The Carat Standard Score

How The Carat Standard reads a report