3.10 ct Marquise Laboratory-Grown Diamond

What reads well

• A 2.09:1 length-to-width ratio sits in the classic marquise range.
• Face-up spread (15.70 × 7.50 mm) is typical or better for a 3.10 ct marquise.
• Table 59% and depth 62.1% fall in the typical marquise range.
• Excellent polish and symmetry, the top finish grades.
• VVS2 clarity: inclusions are not a practical visual factor.

What deserves a closer look

• G color in a 3.10 ct marquise may show some warmth, especially at the points.
• Screening only: for this marquise, check images or video of the exact stone for the bow-tie and whether the two points line up end to end.
• Treatment status is not stated on the report. For a laboratory-grown diamond, ask whether it is as-grown or post-growth treated.

What to check on the exact stone

• In a face-up video, does the bow-tie flicker as the stone tilts, or stay a fixed dark band across the center?
• Will the ring setting use protective V-tip prongs or a bezel to safeguard the two delicate points?
• Does this CVD diamond show any brown or gray undertone face-up in daylight?
• Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin

Laboratory-grown

Carat

3.10 ct

Shape

Marquise

Color

G

Clarity

VVS2

Cut

Not stated

Measurements

15.70 × 7.50 × 4.66 mm

Table

59%

Depth

62.1%

Crown angle

Not stated

Pavilion angle

Not stated

Girdle

Medium to slightly thick (faceted)

Culet

Pointed

Polish

Excellent

Symmetry

Excellent

Fluorescence

None