1.50 ct Round Brilliant Diamond

What reads well

• VVS2 clarity: inclusions are not a practical visual factor.
• I color in a round brilliant usually faces up near-colorless once set.
• Faint fluorescence: no haze risk to weigh.

What deserves a closer look

• The GIA cut grade is Good: the lab's own assessment points to less brightness and fire than its top tier.
• Crown 40° / pavilion 39.6° fall outside the pairing zone associated with strong light return.
• Depth 66.6% sits outside the preferred round range.
• Very thick girdle: a thick girdle carries hidden weight and can reduce face-up size.
• The diameter is small for 1.50 ct: weight is carried below the girdle rather than face-up.

The reading, field by field

Table · Ideal

At 58%, the table sits within the typical 53–59% range for a round brilliant, balancing brightness with fire.

Total depth · Closer look

66.6% 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 40° 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 · Closer look

39.6° is shallower than the narrow 40.5–41.3° zone. Shallow pavilions can let light pass straight through, looking glassy.

Polish · Favorable

Very Good polish is a fine result; the difference from Excellent is rarely visible without magnification.

Symmetry · Favorable

Very Good symmetry is a fine result; the difference from Excellent is rarely visible without magnification.

Girdle · Closer look

Very thick, faceted, 7.0%: 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

I may show slight warmth, especially next to white metal. Yellow or rose gold tends to complement it.

Clarity · Ideal

VVS2: inclusions, if any, are only visible under magnification.

Fluorescence · Ideal

Faint: no meaningful effect on appearance.

Cut grade · Closer look

Good 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 a gray ring or glassy patch show around the center when you look straight down?
• With 66.6% 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

Good (GIA)

Color

I

Clarity

VVS2

Measurements

6.90–6.97 × 4.62 mm

Table

58%

Total depth

66.6%

Crown angle

40°

Pavilion angle

39.6°

Polish

Very Good

Symmetry

Very Good

Girdle

Very thick, faceted, 7.0%

Culet

None

Fluorescence

Faint