The Carat Standard

GIA report 2548786494

0.71 ct Oval Diamond

86/100 · Refined

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

What reads well

  • A 1.40:1 length-to-width ratio sits in the classic oval range.
  • Face-up spread (7.04 × 5.03 mm) is typical or better for a 0.71 ct oval.
  • Table 63% and depth 63.1% fall in the typical oval range.
  • G color should face up white in most settings.
  • No fluorescence: no haze risk to weigh.

What deserves a closer look

  • Confirm this SI1 oval is eye-clean from an image or video; the report plot shows where inclusions sit.
  • The report notes twinning wisps; these can soften transparency in some stones.
  • 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.

The reading, field by field

Table · Ideal
At 63%, the table sits within the typical 53–63% range for an oval, balancing brightness with fire.
Total depth · Ideal
63.1% 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 1.4:1 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 · Favorable
Very Good symmetry is a fine result; the difference from Excellent is rarely visible without magnification.
Girdle · Ideal
Thin 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 · Favorable
G is near-colorless and faces up white in most settings, though an oval can show a hint of warmth at the tips.
Clarity · Favorable
SI1 is often eye-clean in an oval, but not always — check where the inclusions sit.
Fluorescence · Ideal
None: no meaningful effect on appearance.

What to check on the exact stone

  • Is this SI1 diamond eye-clean face-up from about 10 inches away?
  • 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 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
Natural
Carat
0.71 ct
Shape
Oval
Cut grade
Not given for this shape
Color
G
Clarity
SI1
Measurements
7.04 × 5.03 × 3.17 mm
Table
63%
Total depth
63.1%
Crown angle
Not given for this shape
Pavilion angle
Not given for this shape
Polish
Very Good
Symmetry
Very Good
Girdle
Thin to thick, faceted
Culet
None
Fluorescence
None

About The Carat Standard Score

How The Carat Standard reads a report