The Carat Standard

GIA report 7558097548

1.00 ct Cushion Diamond

79/100 · Considered

A balanced profile with a few questions to carry forward.

What reads well

  • A 1.03:1 length-to-width ratio sits in the classic cushion range.
  • F color is in the colorless range.
  • 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.
  • Face-up area is about 19% below typical cushions of this weight, suggesting hidden weight in depth.
  • Confirm this SI1 cushion is eye-clean from an image or video; the report plot shows where inclusions sit.
  • Thick to very thick girdle: a thick girdle carries hidden weight and can reduce face-up size (thicker points are common in fancy shapes).
  • Screening only: bow-tie, windowing and contrast in a cushion can only be judged from images or video of this exact stone.

What to check on the exact stone

  • With 69.5% depth, does this stone face up smaller than a typical 1.00 ct cushion?
  • 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?
  • Does this cushion produce broad, chunky flashes or small needle-like crushed-ice sparkle?

Report facts

Origin
Natural
Carat
1.00 ct
Shape
Cushion
Color
F
Clarity
SI1
Cut
Not stated
Measurements
5.55 × 5.40 × 3.75 mm
Table
57%
Depth
69.5%
Crown angle
Not stated
Pavilion angle
Not stated
Girdle
Thick to very thick, faceted
Culet
None
Polish
Excellent
Symmetry
Very Good
Fluorescence
None

How The Carat Standard reads a report