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Radiant|Lab Grown|IGI

1.53ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG685553936

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

Certificate IGI LG685553936

Diamond specifications and retailer prices

From £127 GBP
As of November 6, 2026
Save £608 GBP (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £735 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.53ct lab-grown radiant diamond

This 1.53ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG685553936 or 685553936. Listed at 15 retailers as of November 1, 2026, with prices from £127 to £735, a £608 spread on the same certified stone. MOH London lists it at £735. 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

1.53
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685553936
Dimensions8.29 × 5.61 × 3.78 mm
L/W Ratio1.48
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.29 mm5.61 mm1.53 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685553936
Side View
Table 62.0%Crown 43°Girdle: Slightly ThickPavilion 34.5°Culet: NoneDepth 67.4%

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: Nov 6
Current: £735 GBP|Low: £127 GBP|High: £1,024 GBP|Avg: £384 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 6£127 GBP
Retailer 5£147 GBP
Retailer 13£158 GBP
Retailer 3£182 GBP
Retailer 9£200 GBP
Retailer 2£272 GBP
Retailer 10£276 GBP
Retailer 4£282 GBP
Retailer 16£345 GBP
Retailer 14£353 GBP
Retailer 15£506 GBP
Retailer 12£534 GBP
Retailer 11£538 GBP
Retailer 7£574 GBP
MOH London£735 GBP
Retailer 8£1,024 GBP

11 data points across 16 retailers

15 retailers£127 GBP to £735 GBP

A
Cheapest Retailer
-
£127 GBP
A
Retailer 2
-
£147 GBP
View
A
Retailer 3
-
£158 GBP
View
A
Retailer 4
-
£182 GBP
View
A
Retailer 5
-
£200 GBP
View
A
Retailer 6
-
£272 GBP
View
A
Retailer 7
-
£276 GBP
View
B+
Retailer 8
-
£282 GBP
View
A
Retailer 9
-
£345 GBP
View
A
Retailer 10
-
£353 GBP
View
B+
Retailer 11
-
£506 GBP
View
B+
Retailer 12
-
£534 GBP
View
B+
Retailer 13
-
£538 GBP
View
B+
Retailer 14
-
£578 GBP
View
Most Expensive
B
MOH London
LG685553936 · Nov 1
£735 GBP
View
14 more retailers have this diamond
Prices start from £127 GBPSave up to £608 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
1.53ct Radiant
£127 GBP