3D ray-traced simulation from certificate proportions. Not a photo of this stone. Accurate representation of optical performance, but it does not account for facet variations and does not show clarity or inclusions. See more.
3.10 ct F VS1 Round Lab-Grown Diamond
$2,060.00
Pass97.1grade score
- Carat
- 3.1
- Colour
- F
- Clarity
- VS1
- Cut
- Ideal
Compare with another stone How we grade
Details
- Report
- IGI LG792667930 · Verify at IGI
- Placement
- Balanced
- Table
- 57.0%
- Depth
- 61.8%
- Crown
- 34.4°
- Pavilion
- 40.9°
- Measurements
- 9.30 – 9.35 × 5.76 mm
- Growth
- CVD
Crown 34.4° and pavilion 40.9° are properly complementary. At a 57.0% table a 34.4° crown calls for 40.82° of pavilion and this stone delivers 40.9° — off by 0.08°. Light entering the crown is turned back through the table rather than leaking out of the pavilion. This is the one thing a round brilliant must get right, and it does. It sits on the locus Sasián et al. (2007) identified as the best-performing set, and that Cowing (2005) calls the axis of Excellent.
Balanced (lean 45/100). Near the middle of the ridge — both white return and dispersion, specialising in neither. The safest choice for unknown lighting, which for a ring worn daily is most lighting.
From the certificate text: the comments carry no treatment statement either way — worth asking the vendor, since most CVD stones receive post-growth HPHT decolourising.
Top tier — score 97.1. The geometry is as strong as certificate numbers can show: crown and pavilion in proper complement, the table where it belongs. This is the standard haus1919 curates to, and this stone clears it with room to spare. What remains — inclusion position and optical symmetry — is confirmed on the actual stone, which no certificate can show.
Balanced (lean 45/100). Near the middle of the ridge — both white return and dispersion, specialising in neither. The safest choice for unknown lighting, which for a ring worn daily is most lighting.
From the certificate text: the comments carry no treatment statement either way — worth asking the vendor, since most CVD stones receive post-growth HPHT decolourising.
Top tier — score 97.1. The geometry is as strong as certificate numbers can show: crown and pavilion in proper complement, the table where it belongs. This is the standard haus1919 curates to, and this stone clears it with room to spare. What remains — inclusion position and optical symmetry — is confirmed on the actual stone, which no certificate can show.
The score, Pass and Fail are our own assessment of the proportions printed on the laboratory report. They are not a laboratory grade. The report itself is the laboratory's; the link above opens it on the laboratory's own site. Questions and method.