The Carat Standard

GIA report 7551406177

3.50 ct Oval Diamond

89/100 · Refined

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

What reads well

  • A 1.45:1 length-to-width ratio sits in the classic oval range.
  • Face-up spread (12.05 × 8.30 mm) is typical or better for a 3.50 ct oval.
  • Excellent polish and symmetry, the top finish grades.
  • F color is in the colorless range.
  • VVS2 clarity: inclusions are not a practical visual factor.

What deserves a closer look

  • Strong blue fluorescence in a F-color stone: a small share of such stones look hazy in sunlight. View it in daylight and neutral light.
  • 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 · Closer look
63.9% is deeper than typical for an oval (58–63.5%). Extra depth holds weight below the girdle, so the stone can face up smaller than its carat weight suggests and may show a stronger bow-tie.
Length-to-width · Ideal
A 1.45:1 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 · Ideal
Excellent symmetry is the top finish grade — facets are cleanly executed with nothing that would soften sparkle.
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
F is in the colorless range and faces up white in any metal.
Clarity · Ideal
VVS2: inclusions, if any, are only visible under magnification.
Fluorescence · Closer look
Strong Blue fluorescence in an F stone occasionally causes a slight haze in sunlight. View it in daylight before buying.

What to check on the exact stone

  • With 63.9% depth, does this stone face up smaller than a typical 3.50 ct oval?
  • Does this F diamond show any milky haze when viewed outdoors in direct sunlight?
  • 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
3.50 ct
Shape
Oval
Color
F
Clarity
VVS2
Cut
Not stated
Measurements
12.05 × 8.30 × 5.30 mm
Table
61%
Depth
63.9%
Crown angle
Not stated
Pavilion angle
Not stated
Girdle
Medium to thick, faceted
Culet
None
Polish
Excellent
Symmetry
Excellent
Fluorescence
Strong Blue

How The Carat Standard reads a report