The Carat Standard

GIA report 7536310248

1.00 ct Asscher Diamond

73/100 · Character

Distinctive trade-offs that should be viewed deliberately.

What reads well

  • A 1.03:1 length-to-width ratio sits in the classic Asscher / square emerald range.
  • Table 66% and depth 68.7% fall in the typical Asscher / square emerald range.
  • No fluorescence: no haze risk to weigh.
  • Medium to slightly thick girdle balances durability and weight retention.

What deserves a closer look

  • The 1.00 ct weight does not match the measurements, which suggest about 0.78 ct. Check the report data before relying on this reading.
  • SI1 in an Asscher / square emerald: the open step-cut table makes inclusions easier to see. View an image or video of this exact stone.
  • Clouds are referenced on the report; confirm the stone looks transparent rather than hazy.
  • Feathers are listed: check the plot for any that reach the girdle or surface, which matters for durability.
  • Screening only: for this Asscher / square emerald, check images or video of the exact stone for the concentric "hall of mirrors", the windmill pattern at the corners and any see-through window.

The reading, field by field

Table · Ideal
At 66%, the table sits within the typical 58–68% range for an Asscher / square emerald, balancing brightness with fire.
Total depth · Ideal
68.7% is within the typical 60–70% range for an Asscher / square emerald, keeping weight where it contributes to face-up size and light return.
Length-to-width · Ideal
A 1.03:1 outline is within the classic 1–1.05:1 range for an Asscher / square emerald.
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
Medium to slightly thick, polished: a durable girdle thickness that doesn't hide meaningful weight.
Culet · Ideal
None: no visible culet facet when viewed face-up.
Color · Closer look
K shows visible warmth. It suits buyers who like a softer, warmer look, and pairs best with yellow or rose gold.
Clarity · Closer look
SI1 in a step cut often shows inclusions through the open table. Confirm eye-cleanliness with images or video.
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?
  • With open step facets, is the center completely eye-clean without any visible dark marks?
  • Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin
Natural
Carat
1.00 ct
Shape
Asscher
Cut grade
Not given for this shape
Color
K
Clarity
SI1
Measurements
5.32 × 5.17 × 3.55 mm
Table
66%
Total depth
68.7%
Crown angle
Not given for this shape
Pavilion angle
Not given for this shape
Polish
Excellent
Symmetry
Very Good
Girdle
Medium to slightly thick, polished
Culet
None
Fluorescence
None

About The Carat Standard Score

How The Carat Standard reads a report