The Carat Standard

IGI report LG747508256

2.91 ct Oval Laboratory-Grown Diamond

93/100 · Signature

An unusually disciplined report profile.

What reads well

  • A 1.41:1 length-to-width ratio sits in the classic oval range.
  • Face-up spread (11.47 × 8.14 mm) is typical or better for a 2.91 ct oval.
  • Table 56% and depth 61.8% fall in the typical oval range.
  • Excellent polish and symmetry, the top finish grades.
  • D color is in the colorless range.

What deserves a closer look

  • 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.

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?
  • Does this HPHT-grown diamond look neutral white beside another stone in daylight, with no gray or blue cast?
  • Can you show me the inscribed report number under a loupe before it is set?

Report facts

Origin
Laboratory-grown
Carat
2.91 ct
Shape
Oval
Color
D
Clarity
IF
Cut
Not stated
Measurements
11.47 × 8.14 × 5.03 mm
Table
56%
Depth
61.8%
Crown angle
Not stated
Pavilion angle
Not stated
Girdle
Medium to slightly thick (faceted)
Culet
Pointed
Polish
Excellent
Symmetry
Excellent
Fluorescence
None

How The Carat Standard reads a report