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Radiant|Lab Grown|IGI

1.54ct F IF Radiant Lab Grown Diamond

ID • F/IF • IGI LG644464594

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

Certificate IGI LG644464594

Diamond specifications and retailer prices

From £318 GBP
As of November 4, 2026
Save £1,591 GBP (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,909 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG644464594 or 644464594. Listed at 23 retailers as of November 4, 2026, with prices from £318 to £1,909, a £1,591 spread on the same certified stone. Brilliant Earth lists it at £1,909. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.3°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG644464594
Dimensions7.68 × 5.76 × 3.99 mm
L/W Ratio1.33
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.68 mm5.76 mm1.54 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG644464594
Side View
Table 63.0%Crown 46.3°Girdle: Slightly ThickPavilion 35.9°Culet: NoneDepth 69.3%

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: Nov 4
Current: £1,909 GBP|Low: £312 GBP|High: £1,917 GBP|Avg: £906 GBP|-0.4%
Brilliant Earth
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 5, 2026
Retailer 11£318 GBP
Retailer 7£357 GBP
Retailer 4£368 GBP
Retailer 19£395 GBP
Retailer 6£502 GBP
Retailer 5£529 GBP
Retailer 20£574 GBP
Retailer 13£645 GBP
Retailer 16£660 GBP
Retailer 17£680 GBP
Retailer 8£806 GBP
Retailer 14£921 GBP
Retailer 15£1,107 GBP
Retailer 3£1,268 GBP
Retailer 9£1,292 GBP
Retailer 2£1,445 GBP
Retailer 12£1,453 GBP
Retailer 10£1,477 GBP
Retailer 18£1,705 GBP
Brilliant Earth£1,909 GBP

42 data points across 20 retailers

23 retailers£318 GBP to £1,909 GBP

A
Cheapest Retailer
-
£318 GBP
A
Retailer 2
-
£357 GBP
View
A
Retailer 3
-
£368 GBP
View
Final sale: no returns
A
Retailer 4
-
£395 GBP
View
Retailer 5
-
£403 GBP
View
Price last confirmed 11 days ago
A
Retailer 6
-
£502 GBP
View
A
Retailer 7
-
£529 GBP
View
A
Retailer 8
-
£574 GBP
View
A
Retailer 9
-
£645 GBP
View
B+
Retailer 10
-
£660 GBP
View
B+
Retailer 11
-
£680 GBP
View
B+
Retailer 12
-
£806 GBP
View
Retailer 13
-
£890 GBP
View
Price last confirmed 163 days ago
B+
Retailer 14
-
£921 GBP
View
B+
Retailer 15
-
£962 GBP
View
B
Retailer 16
-
£1,107 GBP
View
B
Retailer 17
-
£1,268 GBP
View
B
Retailer 18
-
£1,292 GBP
View
B
Retailer 19
-
£1,445 GBP
View
Retailer 20
-
£1,453 GBP
View
Price last confirmed 18 days ago
B
Retailer 21
-
£1,477 GBP
View
B
Retailer 22
-
£1,705 GBP
View
Most Expensive
B
Brilliant Earth
12164945A · Nov 4
£1,909 GBP
$2,570 USD
View
22 more retailers have this diamond
Prices start from £318 GBPSave up to £1,591 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
£318 GBP