The Carat Standard

GIA report 6522715744

1.50 ct Oval Diamond

89/100 · Refined

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

What reads well

  • A 1.39:1 length-to-width ratio sits in the classic oval range.
  • Face-up spread (8.98 × 6.48 mm) is typical or better for a 1.50 ct oval.
  • Table 63% and depth 62.7% fall in the typical oval range.
  • D color is in the colorless range.
  • Faint fluorescence: no haze risk to weigh.

What deserves a closer look

  • The report notes surface 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 63%, the table sits within the typical 53–63% range for an oval, balancing brightness with fire.
Total depth · Ideal
62.7% 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 1.39:1 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
Slightly thick - 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 · Favorable
VS2 is typically eye-clean.
Fluorescence · Ideal
Faint: 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?
  • Is this VS2 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?
  • Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin
Natural
Carat
1.50 ct
Shape
Oval
Color
D
Clarity
VS2
Cut
Not stated
Measurements
8.98 × 6.48 × 4.07 mm
Table
63%
Depth
62.7%
Crown angle
Not stated
Pavilion angle
Not stated
Girdle
Slightly thick to thick, faceted
Culet
None
Polish
Excellent
Symmetry
Very Good
Fluorescence
Faint

How The Carat Standard reads a report