IGI report LG781638019
1.50 ct Pear Laboratory-Grown Diamond
89/100 · Refined
A strong candidate on paper; confirm its light pattern in imagery.
What reads well
- A 1.61:1 length-to-width ratio sits in the classic pear range.
- Face-up spread (10.00 × 6.20 mm) is typical or better for a 1.50 ct pear.
- Excellent polish and symmetry, the top finish grades.
- D color is in the colorless range.
- VS1 clarity is typically eye-clean in a pear.
What deserves a closer look
- A 64.2% depth is on the deep side for a pear; deeper pavilions are associated with a stronger bow-tie and hidden weight.
- Thick to very thick girdle: a thick girdle carries hidden weight and can reduce face-up size (thicker points are common in fancy shapes).
- Screening only: for this pear, check images or video of the exact stone for the bow-tie, even shoulders and a point that lines up with the centre of the rounded end.
- 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 64% table is larger than typical for a pear (53–63%). Large tables can read bright but flatter, with less fire and contrast.
- Total depth · Closer look
- 64.2% is deeper than typical for a pear (58–64%). 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 1.61:1 outline is within the classic 1.45–1.75:1 range for a pear.
- 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 · Closer look
- Thick to very thick (faceted): a thick girdle carries weight in the rim, so the stone can face up a little smaller for its carat weight. It is durable, though.
- 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 · Favorable
- VS1 is typically eye-clean.
- Fluorescence · Ideal
- None: no meaningful effect on appearance.
What to check on the exact stone
- With 64.2% depth, does this stone face up smaller than a typical 1.50 ct pear?
- 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
- 1.50 ct
- Shape
- Pear
- Cut grade
- Not given for this shape
- Color
- D
- Clarity
- VS1
- Measurements
- 10.00 × 6.20 × 3.98 mm
- Table
- 64%
- Total depth
- 64.2%
- Crown angle
- Not given for this shape
- Pavilion angle
- Not given for this shape
- Polish
- Excellent
- Symmetry
- Excellent
- Girdle
- Thick to very thick (faceted)
- Culet
- Pointed
- Fluorescence
- None