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1.54ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG591371622

Shape and cutting style on the report: Round brilliant

Certificate IGI LG591371622

Diamond specifications and retailer prices

From £158 GBP
As of November 5, 2026
Save £626 GBP (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £784 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.54ct lab-grown round diamond

This 1.54ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG591371622 or 591371622. Listed at 15 retailers as of November 5, 2026, with prices from £158 to £784, a £626 spread on the same certified stone. MOH London lists it at £784. 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

1.54
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591371622
Dimensions7.51 × 7.48 × 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 and may include post-growth treatment Type IIa
Top View
7.51 mm7.48 mm1.54 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591371622
Side View
Table 59.0%Crown 33.2°Girdle: MediumPavilion 41°Culet: NoneDepth 60.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £784 GBP|Low: £152 GBP|High: £803 GBP|Avg: £395 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
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 9£158 GBP
Retailer 5£179 GBP
Retailer 4£184 GBP
Retailer 3£196 GBP
Retailer 11£196 GBP
Retailer 6£328 GBP
Retailer 10£337 GBP
Retailer 2£356 GBP
Retailer 13£442 GBP
Retailer 7£550 GBP
Retailer 12£631 GBP
Retailer 8£633 GBP
Retailer 14£635 GBP
MOH London£784 GBP

45 data points across 14 retailers

15 retailers£158 GBP to £784 GBP

A
Cheapest Retailer
-
£158 GBP
A
Retailer 2
-
£179 GBP
View
Final sale: no returns
A
Retailer 3
-
£184 GBP
View
Retailer 4
-
£196 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£196 GBP
View
A
Retailer 6
-
£218 GBP
View
A
Retailer 7
-
£328 GBP
View
B+
Retailer 8
-
£337 GBP
View
A
Retailer 9
-
£356 GBP
View
B+
Retailer 10
-
£442 GBP
View
B+
Retailer 11
-
£550 GBP
View
B
Retailer 12
-
£631 GBP
View
B
Retailer 13
-
£633 GBP
View
B
Retailer 14
-
£635 GBP
View
Most Expensive
B
MOH London
LG591371622 · Nov 5
£784 GBP
View
14 more retailers have this diamond
Prices start from £158 GBPSave up to £626 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
1.54ct Round
£158 GBP