The Carat Standard

GIA report 6495948038

2.50 ct Oval Diamond

83/100 · Considered

A balanced profile with a few questions to carry forward.

What reads well

  • A 1.38:1 length-to-width ratio sits in the classic oval range.
  • Face-up spread (10.36 × 7.53 mm) is typical or better for a 2.50 ct oval.
  • Table 62% and depth 63.4% 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

  • Clouds are referenced on the report; confirm the stone looks transparent rather than hazy.
  • Confirm this SI1 oval is eye-clean from an image or video; the report plot shows where inclusions sit.
  • Very thick girdle: a thick girdle carries hidden weight and can reduce face-up size (thicker points are common in fancy shapes).
  • Feathers are listed: check the plot for any that reach the girdle or surface, which matters for durability.
  • 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 62%, the table sits within the typical 53–63% range for an oval, balancing brightness with fire.
Total depth · Ideal
63.4% 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 1.38:1 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 · Closer look
Very thick (faceted): a thick girdle carries weight in the rim, so the stone can face up a little smaller for its carat weight. It is durable, though.
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

  • Does the diamond look crisp and transparent in natural light, or is there any milky haze?
  • 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?
  • Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin
Natural
Carat
2.50 ct
Shape
Oval
Color
G
Clarity
SI1
Cut
Not stated
Measurements
10.36 × 7.53 × 4.78 mm
Table
62%
Depth
63.4%
Crown angle
Not stated
Pavilion angle
Not stated
Girdle
Medium to very thick, faceted
Culet
None
Polish
Excellent
Symmetry
Very Good
Fluorescence
None

How The Carat Standard reads a report