GIA report 1509591914
1.50 ct Round Brilliant Diamond
88/100 · Refined
A strong, composed candidate on paper.
What reads well
- The GIA Excellent cut grade corroborates the measured proportions.
- Excellent polish and symmetry, the top finish grades.
- G color should face up white in most settings.
- VVS1 clarity: inclusions are not a practical visual factor.
- No fluorescence: no haze risk to weigh.
What deserves a closer look
- Crown 36.5° / pavilion 41.2° fall outside the pairing zone associated with strong light return.
- Depth 63.3% sits outside the preferred round range.
The reading, field by field
- Table · Ideal
- At 57%, the table sits within the typical 53–59% range for a round brilliant, balancing brightness with fire.
- Total depth · Closer look
- 63.3% is deeper than typical for a round brilliant (59.5–63%). Extra depth holds weight below the girdle, so the stone can face up smaller than its carat weight suggests.
- Crown angle · Closer look
- A 36.5° crown is steeper than the typical 32–36° zone. Steep crowns can add fire, but only pair well with a slightly shallower pavilion.
- Pavilion angle · Ideal
- 41.2° 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
- Medium to slightly thick, faceted, 3.5%: a durable girdle thickness that doesn't hide meaningful weight.
- Culet · Ideal
- None: no visible culet facet when viewed face-up.
- Color · Favorable
- G is near-colorless and faces up white in most settings.
- Clarity · Ideal
- VVS1: inclusions, if any, are only visible under magnification.
- 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 steep crown give lively fire without making the center look darker?
- With 63.3% depth, does this stone face up smaller than a typical 1.50 ct round?
- 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
- 1.50 ct
- Shape
- Round Brilliant
- Cut grade
- Excellent (GIA)
- Color
- G
- Clarity
- VVS1
- Measurements
- 7.23–7.28 × 4.60 mm
- Table
- 57%
- Total depth
- 63.3%
- Crown angle
- 36.5°
- Pavilion angle
- 41.2°
- Polish
- Excellent
- Symmetry
- Excellent
- Girdle
- Medium to slightly thick, faceted, 3.5%
- Culet
- None
- Fluorescence
- None