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Radiant|Lab Grown|IGI

1.58ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG662466340

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG662466340

Diamond specifications and retailer prices

From $1,181 NZD
£522 GBP
As of October 29, 2026
1 retailer carries this diamond
Only listing: $1,181 NZD at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 1.58ct lab-grown radiant diamond

This 1.58ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG662466340 or 662466340. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.58
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.8°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG662466340
Dimensions8.39 × 5.88 × 3.86 mm
L/W Ratio1.43
Top View
8.39 mm5.88 mm1.58 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG662466340
Side View
Table 66.0%Crown 43.8°Girdle: MediumPavilion 35.4°CuletDepth 65.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $1,181 NZD|Low: $1,181 NZD|High: $1,181 NZD|Avg: $1,181 NZD
September 26, 2026
Diamond Quarter$1,181 NZD

1 data point across 1 retailer

1 retailer

B
Diamond Quarter
1.58SI1ELG404E8DN · Oct 29
$1,181 NZD
£522 GBP
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B
1.58ct Radiant
$1,181 NZD