The Carat Standard

GIA report 1519528610

2.20 ct Oval Laboratory-Grown Diamond

90/100 · Refined

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

What reads well

  • A 1.43:1 length-to-width ratio sits in the classic oval range.
  • Face-up spread (10.49 × 7.35 mm) is typical or better for a 2.20 ct oval.
  • Table 59% and depth 61.8% fall in the typical oval range.
  • D color is in the colorless range.
  • IF clarity: inclusions are not a practical visual factor.

What deserves a closer look

  • Screening only: for this oval, check images or video of the exact stone for the bow-tie (a dark band across the centre) and whether both ends look even.
  • 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 59%, the table sits within the typical 53–63% range for an oval, balancing brightness with fire.
Total depth · Ideal
61.8% is within the typical 58–63.5% range for an oval, keeping weight where it contributes to face-up size and light return.
Length-to-width · Ideal
A 1.43:1 outline is within the classic 1.3–1.5:1 range for an oval.
Polish · Favorable
Very Good polish is a fine result; the difference from Excellent is rarely visible without magnification.
Symmetry · Ideal
Excellent symmetry is the top finish grade — facets are cleanly executed with nothing that would soften sparkle.
Girdle · Ideal
Slightly thick to thick, faceted: a durable girdle thickness that doesn't hide meaningful weight.
Culet · Ideal
None: no visible culet facet when viewed face-up.
Color · Ideal
D is in the colorless range and faces up white in any metal.
Clarity · Ideal
Internally Flawless (IF): inclusions, if any, are only visible under magnification.
Fluorescence · Ideal
None: no meaningful effect on appearance.

What to check on the exact stone

  • In a face-up video, does the bow-tie flicker as the stone tilts, or stay a fixed dark band across the center?
  • With Very Good polish, are there visible surface polish lines or wheel marks?
  • Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin
Laboratory-grown
Carat
2.20 ct
Shape
Oval
Cut grade
Not given for this shape
Color
D
Clarity
IF
Measurements
10.49 × 7.35 × 4.54 mm
Table
59%
Total depth
61.8%
Crown angle
Not given for this shape
Pavilion angle
Not given for this shape
Polish
Very Good
Symmetry
Excellent
Girdle
Slightly thick to thick, faceted
Culet
None
Fluorescence
None

About The Carat Standard Score

How The Carat Standard reads a report