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Radiant|Lab Grown|IGI

1.54ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG522254225

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

Certificate IGI LG522254225

Diamond specifications and retailer prices

From £746 GBP
$1,000 USD
As of October 31, 2026
Save £1,681 GBP (69%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,573 GBP at NZ Jewellers · As of November 1, 2026
View at NZ Jewellers

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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG522254225 or 522254225. Listed at 13 retailers as of October 31, 2026, with a 225% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG522254225
Dimensions7.92 × 5.53 × 3.79 mm
L/W Ratio1.43
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
7.92 mm5.53 mm1.54 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG522254225
Side View
Table 63.5%Crown 42.5°Girdle: Slightly ThickPavilionCulet: NoneDepth 68.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £1,928 GBP|Low: £746 GBP|High: £3,967 GBP|Avg: £2,135 GBP|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 2£746 GBP
Retailer 5£1,183 GBP
Retailer 8£1,325 GBP
Retailer 6£1,373 GBP
Retailer 1£1,928 GBP
Retailer 7£2,159 GBP
Retailer 4£2,427 GBP
Retailer 9£3,793 GBP
Retailer 3£3,940 GBP

43 data points across 9 retailers

13 retailers£746 GBP to £2,427 GBP

B+
Cheapest Retailer
-
£746 GBP
$1,000 USD
B
Retailer 2
-
£1,183 GBP
$1,585 USD
View
B
Retailer 3
-
£1,287 GBP
$1,725 USD
View
B
Retailer 4
-
£1,325 GBP
$1,775 USD
View
Final sale: no returns
B
Retailer 5
-
£1,373 GBP
$1,839 USD
View
Retailer 6
-
£1,373 GBP
$1,839 USD
View
Price last confirmed 20 days ago
B
Retailer 7
-
£1,500 GBP
$2,010 USD
View
B
Retailer 8
-
£1,928 GBP
View
B
Retailer 9
-
£2,159 GBP
$2,893 USD
View
B
Retailer 10
-
£2,427 GBP
$3,252 USD
View
Most Expensive
NZ Jewellers
a70915a5-9ce0-4e81-b6ec-2c84b1f55a6d · Nov 1
£2,573 GBP
$3,447 USD
View
Price under review
10 more retailers have this diamond
Prices start from £746 GBPSave up to £1,681 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.

B+
1.54ct Radiant
£746 GBP