The Carat Standard

IGI report LG787646745

1.07 ct Heart Laboratory-Grown Diamond

89/100 · Refined

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

What reads well

  • A 0.94:1 length-to-width ratio sits in the classic heart range.
  • Face-up spread (6.53 × 6.97 mm) is typical or better for a 1.07 ct heart.
  • Table 56% and depth 59.8% fall in the typical heart range.
  • D color is in the colorless range.
  • VS2 clarity is typically eye-clean in a heart.

What deserves a closer look

  • The stated 59.8% depth does not match the measurements (about 63.9%). 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 56%, 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 · Ideal
A 1.07:1 outline is within the classic 0.9–1.1:1 range for a heart.
Polish · Favorable
Very Good polish is a fine result; the difference from Excellent is rarely visible without magnification.
Symmetry · Favorable
Very Good symmetry is a fine result; the difference from Excellent is rarely visible without magnification.
Girdle · Ideal
Medium 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
D 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?
  • With Very Good polish and Very Good symmetry, are there visible misaligned facets or wheel marks?
  • Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin
Laboratory-grown
Carat
1.07 ct
Shape
Heart
Color
D
Clarity
VS2
Cut
Not stated
Measurements
6.53 × 6.97 × 4.17 mm
Table
56%
Depth
59.8%
Crown angle
Not stated
Pavilion angle
Not stated
Girdle
Medium to slightly thick (faceted)
Culet
Pointed
Polish
Very Good
Symmetry
Very Good
Fluorescence
None

About The Carat Standard Score

How The Carat Standard reads a report