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Radiant|Lab Grown|IGI

1.13ct D SI1 Radiant Lab Grown Diamond

VG • D/SI1 • IGI LG840636156

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

Certificate IGI LG840636156

Diamond specifications and retailer prices

From £105 GBP
$141 USD
As of October 30, 2026
Save £506 GBP (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £611 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.13ct lab-grown radiant diamond

This 1.13ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG840636156 or 840636156. Listed at 9 retailers as of October 29, 2026, with prices from £105 to £611, a £506 spread on the same certified stone. MOH London lists it at £611. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.13
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.2°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840636156
Dimensions7.43 × 5.13 × 3.45 mm
L/W Ratio1.45
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.43 mm5.13 mm1.13 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840636156
Side View
Table 65.0%Crown 45.2°Girdle: MediumPavilion 35.4°Culet: NoneDepth 67.3%

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 30
Current: £611 GBP|Low: £102 GBP|High: £625 GBP|Avg: £341 GBP|-2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 6£105 GBP
Retailer 4£122 GBP
Retailer 2£156 GBP
Retailer 3£231 GBP
Retailer 8£372 GBP
Retailer 7£419 GBP
Retailer 5£442 GBP
Retailer 9£534 GBP
MOH London£611 GBP

28 data points across 9 retailers

9 retailers£105 GBP to £611 GBP

A
Cheapest Retailer
-
£105 GBP
$141 USD
A
Retailer 2
-
£122 GBP
$163 USD
View
A
Retailer 3
-
£156 GBP
View
A
Retailer 4
-
£231 GBP
€295 EUR
View
B+
Retailer 5
-
£372 GBP
$499 USD
View
B
Retailer 6
-
£419 GBP
$561 USD
View
B
Retailer 7
-
£442 GBP
$592 USD
View
Retailer 8
-
£534 GBP
SGD 966 SGD
View
Price last confirmed 20 days ago
Most Expensive
B
MOH London
LG840636156 · Oct 29
£611 GBP
View
8 more retailers have this diamond
Prices start from £105 GBPSave up to £506 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
1.13ct Radiant
£105 GBP