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Radiant|Lab Grown|IGI

1.54ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG733543173

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

Certificate IGI LG733543173

Diamond specifications and retailer prices

From £337 GBP
$451 USD
As of October 30, 2026
Save £449 GBP (57%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £786 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.54ct lab-grown radiant diamond

This 1.54ct lab-grown radiant 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 LG733543173 or 733543173. Listed at 7 retailers as of October 26, 2026, with prices from £337 to £786, a £449 spread on the same certified stone. MOH London lists it at £786. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48.2°
Pavilion angle30.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG733543173
Dimensions8.05 × 5.67 × 3.77 mm
L/W Ratio1.42
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.05 mm5.67 mm1.54 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG733543173
Side View
Table 60.0%Crown 48.2°Girdle: STK-THKPavilion 30.8°Culet: NoneDepth 66.5%

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 30
Current: £786 GBP|Low: £279 GBP|High: £794 GBP|Avg: £463 GBP|+1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 6£337 GBP
Retailer 4£342 GBP
Retailer 7£354 GBP
Retailer 2£362 GBP
Retailer 5£443 GBP
Retailer 3£668 GBP
MOH London£786 GBP

31 data points across 7 retailers

7 retailers£337 GBP to £786 GBP

B+
Cheapest Retailer
-
£337 GBP
$451 USD
Retailer 2
-
£342 GBP
€437 EUR
View
Price last confirmed 7 days ago
A
Retailer 3
-
£354 GBP
$474 USD
View
A
Retailer 4
-
£362 GBP
View
B+
Retailer 5
-
£443 GBP
$594 USD
View
Retailer 6
-
£668 GBP
$895 USD
View
Price last confirmed 11 days ago
Most Expensive
B
MOH London
LG733543173 · Oct 26
£786 GBP
View
6 more retailers have this diamond
Prices start from £337 GBPSave up to £449 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 Radiant
£337 GBP