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Round|Lab Grown|IGI

1.53ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG818686765

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818686765

Diamond specifications and retailer prices

From £152 GBP
$204 USD
As of October 29, 2026
Save £728 GBP (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £881 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.53ct lab-grown round diamond

This 1.53ct lab-grown round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818686765 or 818686765. Listed at 14 retailers as of October 29, 2026, with prices from £152 to £881, a £728 spread on the same certified stone. MOH London lists it at £881. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686765
Dimensions7.40 × 7.34 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.40 mm7.34 mm1.53 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686765
Side View
Table 59.0%Crown 34.2°Girdle: MediumPavilion 41.5°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
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 29
Current: £881 GBP|Low: £152 GBP|High: £891 GBP|Avg: £452 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 7£152 GBP
Retailer 9£188 GBP
Retailer 4£313 GBP
Retailer 10£326 GBP
Retailer 2£345 GBP
Retailer 3£349 GBP
Retailer 6£487 GBP
Retailer 5£534 GBP
Retailer 11£645 GBP
Retailer 8£649 GBP
MOH London£881 GBP

43 data points across 11 retailers

14 retailers£152 GBP to £881 GBP

A
Cheapest Retailer
-
£152 GBP
$204 USD
A
Retailer 2
-
£176 GBP
$236 USD
View
A
Retailer 3
-
£188 GBP
$252 USD
View
A
Retailer 4
-
£188 GBP
$252 USD
View
A
Retailer 5
-
£313 GBP
€400 EUR
View
B+
Retailer 6
-
£326 GBP
$437 USD
View
A
Retailer 7
-
£345 GBP
View
A
Retailer 8
-
£349 GBP
$467 USD
View
B+
Retailer 9
-
£487 GBP
$652 USD
View
B+
Retailer 10
-
£534 GBP
$715 USD
View
B+
Retailer 11
-
£605 GBP
$811 USD
View
B
Retailer 12
-
£645 GBP
$865 USD
View
B
Retailer 13
-
£649 GBP
$870 USD
View
Most Expensive
B
MOH London
LG818686765 · Nov 1
£881 GBP
View
13 more retailers have this diamond
Prices start from £152 GBPSave up to £728 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 Round
£152 GBP