Studio light, simulated Spot light, simulated Worn, everyday room light, simulated Light return map, simulated Arrows, table up, simulated Hearts, table down, simulated Flash map, simulated

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.

1.59 ct E VVS2 Round Lab-Grown Diamond

$850.00

Pass73.1grade score
Carat
1.59
Colour
E
Clarity
VVS2
Cut
Ideal

Polish Excellent · Symmetry Excellent · Fluorescence None

Triple Excellent on the report. *Why this does not matter

IGI report, partly hidden
IGI report for this stone, with its number, codes, measurements and depth hidden
Details
Placement
Brightness
Table
58.0%
Crown
34.0°
Pavilion
41.4°
Growth
CVD
The pavilion is 0.47° steeper than its crown supports. A 34.0° crown at a 58.0% table needs 40.93°; this has 41.4°. That is roughly 2.3 crown-degrees worth of mismatch on a trade-off that only tolerates a fraction of one. Expect leakage in a ring just inside the table, which reads as a dull, lifeless zone rather than a hard dark centre. The Cut Group documented exactly this at 35.3°/41.4° on a 57% table — “very unattractive leakage just inside the table”.

Brightness-leaning (lean 25/100). Whiter, more mirror-like return with less coloured flash. Reads well in diffuse everyday light and photographs cleanly — which matters if it sells from images.

The 58.0% table is larger than this crown implies — a 34.0° crown belongs with a 55.3–57.1% table. Mixed intent from the cutter, usually weight retention. It will read less decisively as either style.

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.

It sits on a gate edge — pavilion 41.4° on the 41.4° ceiling; table 58.0% on the 58.0% ceiling. IGI reports to a step wide enough that the true value could be on either side of the line. Treat the pass as provisional and let a re-measure settle it.

Passes — score 73.1. It meets the standard, but it is not a stone we would highlight — differences start to be visible to a trained eye under the right lighting.

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 picture is the laboratory's own, with its number, codes, measurements and depth hidden; the full report comes with your order. Questions and method.

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