The Carat Standard

GIA report 6535865834

1.25 ct Oval Diamond

91/100 · 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 (8.70 × 6.09 mm) is typical or better for a 1.25 ct oval.
  • Table 61% and depth 61.8% fall in the typical oval range.
  • D color is in the colorless range.
  • No fluorescence: no haze risk to weigh.

What deserves a closer look

  • The report notes internal graining; 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 61%, 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 · Ideal
Excellent polish is the top finish grade — facets are cleanly executed with nothing that would soften sparkle.
Symmetry · Favorable
Very Good symmetry is a fine result; the difference from Excellent is rarely visible without magnification.
Girdle · Ideal
Medium 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
VVS1: inclusions, if any, are only visible under magnification.
Fluorescence · Ideal
None: no meaningful effect on appearance.

What to check on the exact stone

  • Does the feather reach the outer edge where a setting prong could put pressure on it?
  • 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 symmetry, are any facet junctions visibly misaligned?
  • Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin
Natural
Carat
1.25 ct
Shape
Oval
Cut grade
Not given for this shape
Color
D
Clarity
VVS1
Measurements
8.70 × 6.09 × 3.76 mm
Table
61%
Total depth
61.8%
Crown angle
Not given for this shape
Pavilion angle
Not given for this shape
Polish
Excellent
Symmetry
Very Good
Girdle
Medium to thick, faceted
Culet
None
Fluorescence
None

About The Carat Standard Score

How The Carat Standard reads a report