0.63 ct Oval Laboratory-Grown Diamond

What reads well

• A 1.48:1 length-to-width ratio sits in the classic oval range.
• Face-up spread (6.91 × 4.66 mm) is typical or better for a 0.63 ct oval.
• E color is in the colorless range.
• VS1 clarity is typically eye-clean in an oval.
• No fluorescence: no haze risk to weigh.

What deserves a closer look

• The table 67% sits outside the typical oval range.
• Very Good polish / Good symmetry is below the Excellent/Very Good standard and can soften sparkle.
• A 64.6% depth is on the deep side for an oval; deeper pavilions are associated with a stronger bow-tie and hidden weight.
• Screening only: for this oval, check images or video of the exact stone for the bow-tie (a dark band across the centre) and whether both ends look even.
• Treatment status is not stated on the report. For a laboratory-grown diamond, ask whether it is as-grown or post-growth treated.

The reading, field by field

Table · Closer look

A 67% table is larger than typical for an oval (53–63%). Large tables can read bright but flatter, with less fire and contrast.

Total depth · Closer look

64.6% is deeper than typical for an oval (58–63.5%). Extra depth holds weight below the girdle, so the stone can face up smaller than its carat weight suggests and may show a stronger bow-tie.

Length-to-width · Ideal

A 1.48:1 outline is within the classic 1.3–1.5:1 range for an oval.

Polish · Favorable

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

Symmetry · Closer look

Good symmetry is below the grades most buyers target and can slightly soften crispness. Worth seeing the stone in person or on video.

Girdle · Ideal

Medium To Slightly Thick (Faceted): a durable girdle thickness that doesn't hide meaningful weight.

Culet · Ideal

Pointed: no visible culet facet when viewed face-up.

Color · Ideal

E is in the colorless range and faces up white in any metal.

Clarity · Favorable

VS1 is typically eye-clean.

Fluorescence · Ideal

None: no meaningful effect on appearance.

What to check on the exact stone

• With 64.6% depth, does this stone face up smaller than a typical 0.63 ct oval?
• Does the large table look bright but flat, with less colored fire than you expected?
• In a face-up video, does the bow-tie flicker as the stone tilts, or stay a fixed dark band across the center?
• Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin

Laboratory-grown

Carat

0.63 ct

Shape

Oval

Color

E

Clarity

VS1

Cut

Not stated

Measurements

6.91 × 4.66 × 3.01 mm

Table

67%

Depth

64.6%

Crown angle

Not stated

Pavilion angle

Not stated

Girdle

Medium to slightly thick (faceted)

Culet

Pointed

Polish

Very Good

Symmetry

Good

Fluorescence

None