The Carat Standard

IGI report LG825637960

1.00 ct Oval Laboratory-Grown Diamond

90/100 · Refined

A strong candidate on paper; confirm its light pattern in imagery.

What reads well

  • A 1.40:1 length-to-width ratio sits in the classic oval range.
  • Face-up spread (8.03 × 5.73 mm) is typical or better for a 1.00 ct oval.
  • Table 60% and depth 60.7% 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: bow-tie, windowing and contrast in an oval can only be judged from images or video of this exact stone.

What to check on the exact stone

  • How dark is the bow-tie shadow across the center when viewed in normal daylight?
  • 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
1.00 ct
Shape
Oval
Color
D
Clarity
FL
Cut
Not stated
Measurements
8.03 × 5.73 × 3.48 mm
Table
60%
Depth
60.7%
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