The Carat Standard

IGI report LG783641326

1.05 ct Oval Laboratory-Grown Diamond

93/100 · Signature

An unusually disciplined report profile.

What reads well

  • A 1.48:1 length-to-width ratio sits in the classic oval range.
  • Face-up spread (8.34 × 5.65 mm) is typical or better for a 1.05 ct oval.
  • Table 58% and depth 63.2% 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.

The reading, field by field

Table · Ideal
At 58%, the table sits within the typical 53–63% range for an oval, balancing brightness with fire.
Total depth · Ideal
63.2% is within the typical 58–63.5% range for an oval, keeping weight where it contributes to face-up size and light return.
Length-to-width · Ideal
A 1.48:1 outline is within the classic 1.3–1.5:1 range for an oval.
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 (Faceted): a durable girdle thickness that doesn't hide meaningful weight.
Culet · Ideal
Pointed: no visible culet facet when viewed face-up.
Color · Ideal
D is in the colorless range and faces up white in any metal.
Clarity · Ideal
VVS1: inclusions, if any, are only visible under magnification.
Fluorescence · Ideal
None: no meaningful effect on appearance.

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
1.05 ct
Shape
Oval
Color
D
Clarity
VVS1
Cut
Not stated
Measurements
8.34 × 5.65 × 3.57 mm
Table
58%
Depth
63.2%
Crown angle
Not stated
Pavilion angle
Not stated
Girdle
Medium (faceted)
Culet
Pointed
Polish
Excellent
Symmetry
Excellent
Fluorescence
None

About The Carat Standard Score

How The Carat Standard reads a report