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Radiant|Lab Grown|IGI

1.32ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG512205136

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

Certificate IGI LG512205136

Diamond specifications and retailer prices

From £545 GBP
As of November 6, 2026
Save £1,368 GBP (71%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,544 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.32ct lab-grown radiant diamond

This 1.32ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512205136 or 512205136. Listed at 11 retailers as of November 6, 2026, with a 251% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.32
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512205136
Dimensions7.15 × 5.43 × 3.85 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
7.15 mm5.43 mm1.32 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512205136
Side View
Table 66.5%Crown 37.7°Girdle: MediumPavilion 33.1°Culet: NoneDepth 70.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,544 GBP|Low: £545 GBP|High: £2,581 GBP|Avg: £1,128 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 4£545 GBP
Retailer 7£586 GBP
Retailer 11£638 GBP
Retailer 3£681 GBP
Retailer 8£681 GBP
Retailer 5£811 GBP
Retailer 2£1,033 GBP
Retailer 10£1,099 GBP
Retailer 6£1,618 GBP
Retailer 9£1,913 GBP
MOH London£2,544 GBP

44 data points across 11 retailers

11 retailers£545 GBP to £1,913 GBP

B+
Cheapest Retailer
-
£545 GBP
B+
Retailer 2
-
£586 GBP
View
B+
Retailer 3
-
£638 GBP
View
Retailer 4
-
£681 GBP
View
Price last confirmed 26 days ago
B
Retailer 5
-
£681 GBP
View
B
Retailer 6
-
£811 GBP
View
B
Retailer 7
-
£1,033 GBP
View
B
Retailer 8
-
£1,099 GBP
View
B
Retailer 9
-
£1,618 GBP
View
B
Retailer 10
-
£1,913 GBP
View
Most Expensive
MOH London
LG512205136 · Nov 5
£2,544 GBP
View
Price under review
10 more retailers have this diamond
Prices start from £545 GBPSave up to £1,368 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.

B+
1.32ct Radiant
£545 GBP