GIA report 2556685417
1.50 ct Asscher Diamond
78/100 · Considered
A balanced profile with a few questions to carry forward.
What reads well
- A 1.02:1 length-to-width ratio sits in the classic Asscher / square emerald range.
- Face-up spread (6.19 × 6.05 mm) is typical or better for a 1.50 ct Asscher / square emerald.
- Table 66% and depth 69.7% fall in the typical Asscher / square emerald range.
- Excellent polish and symmetry, the top finish grades.
- No fluorescence: no haze risk to weigh.
What deserves a closer look
- 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.
- Thick to very thick girdle: a thick girdle carries hidden weight and can reduce face-up size (thicker points are common in fancy shapes).
- 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
- 69.7% 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 1.02:1 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 · Ideal
- Excellent symmetry is the top finish grade — facets are cleanly executed with nothing that would soften sparkle.
- Girdle · Closer look
- Thick to very thick, polished: 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
- H is near-colorless and faces up white in most settings, though an Asscher / square emerald can show a hint of warmth at the corners.
- 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
- 1.50 ct
- Shape
- Asscher
- Cut grade
- Not given for this shape
- Color
- H
- Clarity
- SI1
- Measurements
- 6.19 × 6.05 × 4.22 mm
- Table
- 66%
- Total depth
- 69.7%
- Crown angle
- Not given for this shape
- Pavilion angle
- Not given for this shape
- Polish
- Excellent
- Symmetry
- Excellent
- Girdle
- Thick to very thick, polished
- Culet
- None
- Fluorescence
- None