IGI report LG759531137

1.55 ct Round Brilliant Laboratory-Grown Diamond

92/100 · Signature

An unusually disciplined report profile.

What reads well

Crown 33.2° / pavilion 40.5° fall outside the pairing zone associated with strong light return.

Table · Ideal: At 57%, the table sits within the typical 53–59% range for a round brilliant, balancing brightness with fire.
Total depth · Ideal: 60.6% is within the typical 59.5–63% range for a round brilliant, keeping weight where it contributes to face-up size and light return.
Crown angle · Ideal: 33.2° sits in the 32–36° zone where crown angles typically balance fire and brightness.
Pavilion angle · Ideal: 40.5° is inside the narrow 40.5–41.3° zone where the pavilion returns light most efficiently.
Polish · Ideal: Excellent polish is the top finish grade — facets are cleanly executed with nothing that would soften sparkle.
Symmetry · Favorable: Very Good symmetry is a fine result; the difference from Excellent is rarely visible without magnification.
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: 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.
Cut grade · Ideal: Ideal as issued by IGI, on IGI's own scale. The measured proportions above tell you more than the label.

Does this HPHT-grown diamond look neutral white beside another stone in daylight, with no gray or blue cast?
With Very Good symmetry, are any facet junctions visibly misaligned?
Can I see this stone in soft daylight away from store spotlights to verify its sparkle?
Can you show me the inscribed report number under a loupe before it is set?