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Radiant|Lab Grown|IGI

1.09ct E SI2 Radiant Lab Grown Diamond

ID • E/SI2 • IGI LG634405513

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

Certificate IGI LG634405513

Diamond specifications and retailer prices

From £163 GBP
$217 USD
As of October 27, 2026
Save £652 GBP (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £815 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.09ct lab-grown radiant diamond

This 1.09ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG634405513 or 634405513. Listed at 14 retailers as of October 27, 2026, with prices from £163 to £815, a £652 spread on the same certified stone. MOH London lists it at £815. 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

1.09
Carat
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.8°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG634405513
Dimensions6.62 × 5.03 × 3.63 mm
L/W Ratio1.32
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.62 mm5.03 mm1.09 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG634405513
Side View
Table 65.0%Crown 40.8°Girdle: STK-THKPavilion 33.4°Culet: NoneDepth 72.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: £815 GBP|Low: £104 GBP|High: £821 GBP|Avg: £415 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 10£104 GBP
Retailer 9£182 GBP
Retailer 7£240 GBP
Retailer 6£347 GBP
Retailer 2£376 GBP
Retailer 8£381 GBP
Retailer 5£650 GBP
Retailer 3£653 GBP
Retailer 4£661 GBP
MOH London£815 GBP

41 data points across 10 retailers

14 retailers£163 GBP to £815 GBP

A
Cheapest Retailer
-
£163 GBP
$217 USD
A
Retailer 2
-
£182 GBP
$242 USD
View
Final sale: no returns
A
Retailer 3
-
£189 GBP
$252 USD
View
A
Retailer 4
-
£203 GBP
$270 USD
View
A
Retailer 5
-
£203 GBP
$270 USD
View
A
Retailer 6
-
£240 GBP
$320 USD
View
B+
Retailer 7
-
£347 GBP
$462 USD
View
B+
Retailer 8
-
£376 GBP
View
B+
Retailer 9
-
£381 GBP
$507 USD
View
B
Retailer 10
-
£423 GBP
HK$4,400 HKD
View
B
Retailer 11
-
£650 GBP
$866 USD
View
B
Retailer 12
-
£653 GBP
$870 USD
View
B
Retailer 13
-
£661 GBP
$880 USD
View
Most Expensive
B
MOH London
LG634405513 · Oct 29
£815 GBP
View
13 more retailers have this diamond
Prices start from £163 GBPSave up to £652 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
1.09ct Radiant
£163 GBP