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Radiant|Lab Grown|IGI

1.45ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG754508818

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

Certificate IGI LG754508818

Diamond specifications and retailer prices

From £334 GBP
HK$3,500 HKD
As of October 31, 2026
Save £1,405 GBP (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,739 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.45ct lab-grown radiant diamond

This 1.45ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754508818 or 754508818. Listed at 15 retailers as of October 31, 2026, with prices from £334 to £1,739, a £1,405 spread on the same certified stone. Brilliant Earth lists it at £1,739. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.45
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508818
Dimensions5.57 × 5.57 × 3.68 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.57 mm5.57 mm1.45 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508818
Side View
Table 60.0%Crown 37.8°Girdle: MED-STKPavilion 33.7°Culet: NoneDepth 66.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: £1,739 GBP|Low: £276 GBP|High: £2,269 GBP|Avg: £856 GBP|-23.4%
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
November 1, 2026
Retailer 12£334 GBP
Retailer 11£336 GBP
Retailer 7£393 GBP
Retailer 3£401 GBP
Retailer 2£452 GBP
Retailer 5£524 GBP
Retailer 4£633 GBP
Retailer 6£888 GBP
Retailer 8£951 GBP
Retailer 14£955 GBP
Retailer 10£977 GBP
Retailer 9£1,541 GBP
Retailer 13£1,596 GBP
Brilliant Earth£1,739 GBP

44 data points across 14 retailers

15 retailers£334 GBP to £1,739 GBP

A
Cheapest Retailer
-
£334 GBP
HK$3,500 HKD
A
Retailer 2
-
£336 GBP
$450 USD
View
A
Retailer 3
-
£393 GBP
€502 EUR
View
A
Retailer 4
-
£401 GBP
$537 USD
View
A
Retailer 5
-
£452 GBP
View
A
Retailer 6
-
£524 GBP
$702 USD
View
B+
Retailer 7
-
£633 GBP
$848 USD
View
B+
Retailer 8
-
£888 GBP
$1,190 USD
View
B+
Retailer 9
-
£951 GBP
View
B+
Retailer 10
-
£955 GBP
SGD 1,729 SGD
View
Retailer 11
-
£977 GBP
A$2,013 AUD
View
Price last confirmed 24 days ago
Retailer 12
-
£1,489 GBP
$1,995 USD
View
Price last confirmed 10 days ago
Retailer 13
-
£1,541 GBP
$2,065 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
£1,596 GBP
$2,138 USD
View
Most Expensive
B
Brilliant Earth
18669149Y · Oct 31
£1,739 GBP
$2,330 USD
View
14 more retailers have this diamond
Prices start from £334 GBPSave up to £1,405 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
1.45ct Radiant
£334 GBP