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Radiant|Lab Grown|IGI

1.59ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG761566173

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

Certificate IGI LG761566173

Diamond specifications and retailer prices

From £197 GBP
$263 USD
As of October 27, 2026
Save £786 GBP (80%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £983 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.59ct lab-grown radiant diamond

This 1.59ct 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 LG761566173 or 761566173. Listed at 7 retailers as of October 26, 2026, with prices from £197 to £983, a £786 spread on the same certified stone. MOH London lists it at £983. 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

1.59
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.8°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG761566173
Dimensions8.05 × 5.72 × 3.89 mm
L/W Ratio1.41
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.05 mm5.72 mm1.59 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG761566173
Side View
Table 64.0%Crown 45.8°Girdle: MED-STKPavilion 34.6°Culet: NoneDepth 68.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: £983 GBP|Low: £190 GBP|High: £994 GBP|Avg: £574 GBP|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 28, 2026
Retailer 4£197 GBP
Retailer 7£229 GBP
Retailer 6£409 GBP
Retailer 2£409 GBP
Retailer 10£471 GBP
Retailer 8£504 GBP
Retailer 9£657 GBP
Retailer 3£753 GBP
Retailer 5£788 GBP
MOH London£983 GBP

12 data points across 10 retailers

7 retailers£197 GBP to £983 GBP

A
Cheapest Retailer
-
£197 GBP
$263 USD
A
Retailer 2
-
£229 GBP
$305 USD
View
B+
Retailer 3
-
£409 GBP
$544 USD
View
A
Retailer 4
-
£409 GBP
$545 USD
View
B
Retailer 5
-
£753 GBP
$1,003 USD
View
B
Retailer 6
-
£788 GBP
$1,049 USD
View
Most Expensive
B
MOH London
LG761566173 · Oct 26
£983 GBP
View
6 more retailers have this diamond
Prices start from £197 GBPSave up to £786 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.59ct Radiant
£197 GBP