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Radiant|Lab Grown|IGI

1.54ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG605363231

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

Certificate IGI LG605363231

Diamond specifications and retailer prices

From £307 GBP
$411 USD
As of November 1, 2026
Save £411 GBP (57%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £718 GBP at Frank Darling · As of October 31, 2026
View at Frank Darling

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 LG605363231 or 605363231. Listed at 2 retailers as of October 31, 2026, with prices from £307 to £718, a £411 spread on the same certified stone. Frank Darling lists it at £718. 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 angle37.6°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605363231
Dimensions8.07 × 5.81 × 3.81 mm
L/W Ratio1.39
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
8.07 mm5.81 mm1.54 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605363231
Side View
Table 64.0%Crown 37.6°Girdle: MediumPavilion 36.2°Culet: NoneDepth 65.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £718 GBP|Low: £147 GBP|High: £1,724 GBP|Avg: £760 GBP|+3.6%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
September 26, 2026
Retailer 4£147 GBP
Retailer 2£307 GBP
Retailer 3£463 GBP
Retailer 6£526 GBP
Retailer 7£658 GBP
Frank Darling£718 GBP
Retailer 5£903 GBP
Retailer 8£1,694 GBP

76 data points across 8 retailers

2 retailers£307 GBP to £718 GBP

A
Cheapest Retailer
-
£307 GBP
$411 USD
Most Expensive
B
Frank Darling
LVA10-081BBA · Oct 31
£718 GBP
$962 USD
View
1 more retailer has this diamond
Prices start from £307 GBPSave up to £411 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
£307 GBP