The Carat Standard

GIA report 2548786494

0.71 ct Oval Diamond

85/100 · 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.
  • Not stated on the report: girdle, culet. These are not assumed to be favorable, and confidence is lower.

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.
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
Color
G
Clarity
SI1
Cut
Not stated
Measurements
7.04 × 5.03 × 3.17 mm
Table
63%
Depth
63.1%
Crown angle
Not stated
Pavilion angle
Not stated
Girdle
Thin to thick, faceted
Culet
None
Polish
Very Good
Symmetry
Very Good
Fluorescence
None

How The Carat Standard reads a report