The Carat Standard

GIA report 6341032381

1.50 ct Radiant Diamond

79/100 · Considered

A balanced profile with a few questions to carry forward.

What reads well

  • A 1.25:1 length-to-width ratio sits in the classic radiant range.
  • VVS1 clarity: inclusions are not a practical visual factor.
  • Very Strong blue fluorescence can make I color face up a touch whiter in daylight.

What deserves a closer look

  • The depth 72.7% sits outside the typical radiant range.
  • Face-up area is about 13% below typical radiants of this weight, suggesting hidden weight in depth.
  • Very thick girdle: a thick girdle carries hidden weight and can reduce face-up size (thicker points are common in fancy shapes).
  • I color in a 1.50 ct radiant may show some warmth, especially at the corners.
  • Screening only: for this radiant, check images or video of the exact stone for the sparkle pattern (defined flashes or "crushed ice") and any dark or see-through corners.

The reading, field by field

Table · Ideal
At 65%, the table sits within the typical 60–70% range for a radiant, balancing brightness with fire.
Total depth · Closer look
72.7% is deeper than typical for a radiant (61–68%). Extra depth holds weight below the girdle, so the stone can face up smaller than its carat weight suggests.
Length-to-width · Ideal
A 1.25:1 outline is within the classic 1.2–1.5:1 range for a radiant.
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.
Girdle · Closer look
Very thick: 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
I may show slight warmth at the corners of a radiant, especially next to white metal. Yellow or rose gold tends to complement it.
Clarity · Ideal
VVS1: inclusions, if any, are only visible under magnification.
Fluorescence · Favorable
Very Strong Blue fluorescence can make an I stone look whiter in daylight; it is rarely a problem at this color.

What to check on the exact stone

  • With 72.7% depth, does this stone face up smaller than a typical 1.50 ct radiant?
  • Does the feather reach the outer edge where a setting prong could put pressure on it?
  • Can I view this stone in daylight to see if the blue fluorescence helps it look whiter?
  • Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin
Natural
Carat
1.50 ct
Shape
Radiant
Cut grade
Not given for this shape
Color
I
Clarity
VVS1
Measurements
6.91 × 5.55 × 4.03 mm
Table
65%
Total depth
72.7%
Crown angle
Not given for this shape
Pavilion angle
Not given for this shape
Polish
Very Good
Symmetry
Very Good
Girdle
Very thick
Culet
None
Fluorescence
Very Strong Blue

About The Carat Standard Score

How The Carat Standard reads a report