GIA report 1558861752
3.00 ct Round Brilliant Diamond
73/100 · Character
Distinctive trade-offs that should be viewed deliberately.
What reads well
- Crown 33° with pavilion 40.8° sits in the well-regarded pairing zone for brightness and fire.
- The GIA Excellent cut grade corroborates the measured proportions.
- Excellent polish and symmetry, the top finish grades.
- No fluorescence: no haze risk to weigh.
- Slightly thick girdle balances durability and weight retention.
What deserves a closer look
- SI2 is often not eye-clean in a round brilliant; 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.
- The report notes internal graining; these can soften transparency in some stones.
- I color can show slight warmth in some settings, more so in white metal.
The reading, field by field
- Table · Closer look
- A 60% table is larger than typical for a round brilliant (53–59%). Large tables can read bright but flatter, with less fire and contrast.
- Total depth · Ideal
- 59.7% is within the typical 59.5–63% range for a round brilliant, keeping weight where it contributes to face-up size and light return.
- Crown angle · Ideal
- 33° sits in the 32–36° zone where crown angles typically balance fire and brightness.
- Pavilion angle · Ideal
- 40.8° is inside the narrow 40.5–41.3° zone where the pavilion returns light most efficiently.
- 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
- Slightly thick, faceted, 4.0%: a durable girdle thickness that doesn't hide meaningful weight.
- Culet · Ideal
- None: no visible culet facet when viewed face-up.
- Color · Favorable
- I may show slight warmth, especially next to white metal. Yellow or rose gold tends to complement it.
- Clarity · Closer look
- SI2: inclusions may be visible to the eye. Confirm with images or video before buying.
- Fluorescence · Ideal
- None: no meaningful effect on appearance.
- Cut grade · Ideal
- Excellent as issued by GIA, on GIA's own scale. The measured proportions above tell you more than the label.
What to check on the exact stone
- Does the large table look bright but flat, with less colored fire than you expected?
- 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?
- Can you show me the inscribed report number under a loupe before it is set?
Report facts
- Origin
- Natural
- Carat
- 3.00 ct
- Shape
- Round Brilliant
- Cut grade
- Excellent (GIA)
- Color
- I
- Clarity
- SI2
- Measurements
- 9.31–9.34 × 5.57 mm
- Table
- 60%
- Total depth
- 59.7%
- Crown angle
- 33°
- Pavilion angle
- 40.8°
- Polish
- Excellent
- Symmetry
- Excellent
- Girdle
- Slightly thick, faceted, 4.0%
- Culet
- None
- Fluorescence
- None