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Round|Lab Grown|IGI

1.53ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG770637221

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770637221

Diamond specifications and retailer prices

From £313 GBP
€400 EUR
As of October 31, 2026
Save £567 GBP (64%) vs most expensive(unlock to see where)
11 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 LG770637221 or 770637221. Listed at 11 retailers as of October 31, 2026, with prices from £313 to £881, a £567 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 angle33.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770637221
Dimensions7.44 × 7.43 × 4.51 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.44 mm7.43 mm1.53 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770637221
Side View
Table 58.0%Crown 33.5°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.6%

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 31
Current: £881 GBP|Low: £188 GBP|High: £891 GBP|Avg: £457 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8£188 GBP
Retailer 3£313 GBP
Retailer 7£326 GBP
Retailer 2£343 GBP
Retailer 9£380 GBP
Retailer 5£487 GBP
Retailer 4£534 GBP
Retailer 6£649 GBP
MOH London£881 GBP

42 data points across 9 retailers

11 retailers£313 GBP to £881 GBP

Retailer 1
-
£188 GBP
$252 USD
Price last confirmed 8 days ago
A
Retailer 2
-
£313 GBP
€400 EUR
View
B+
Retailer 3
-
£326 GBP
$437 USD
View
A
Retailer 4
-
£343 GBP
View
A
Retailer 5
-
£349 GBP
$467 USD
View
B+
Retailer 6
-
£380 GBP
$509 USD
View
B+
Retailer 7
-
£487 GBP
$652 USD
View
B+
Retailer 8
-
£534 GBP
$715 USD
View
B
Retailer 9
-
£645 GBP
$865 USD
View
B
Retailer 10
-
£649 GBP
$870 USD
View
Most Expensive
B
MOH London
LG770637221 · Nov 1
£881 GBP
View
10 more retailers have this diamond
Prices start from £313 GBPSave up to £567 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
£313 GBP