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Radiant|Lab Grown|IGI

1.50ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG735583311

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

Certificate IGI LG735583311

Diamond specifications and retailer prices

From £190 GBP
$255 USD
As of October 30, 2026
Save £1,549 GBP (89%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,739 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.5ct lab-grown radiant diamond

This 1.5ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG735583311 or 735583311. Listed at 16 retailers as of October 30, 2026, with prices from £190 to £1,739, a £1,549 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

1.50
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735583311
Dimensions7.71 × 5.66 × 3.94 mm
L/W Ratio1.36
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
7.71 mm5.66 mm1.50 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG735583311
Side View
Table 68.0%Crown 44.4°Girdle: MediumPavilion 40.4°Culet: NoneDepth 69.6%

Caratlytics Score

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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: £1,739 GBP|Low: £163 GBP|High: £2,485 GBP|Avg: £830 GBP|-30.0%
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
October 31, 2026
Retailer 5£190 GBP
Retailer 6£213 GBP
Retailer 4£221 GBP
Retailer 13£305 GBP
Retailer 12£331 GBP
Retailer 9£332 GBP
Retailer 2£429 GBP
Retailer 11£606 GBP
Retailer 16£666 GBP
Retailer 14£790 GBP
Retailer 7£838 GBP
Retailer 8£913 GBP
Retailer 10£1,050 GBP
Retailer 15£1,601 GBP
Retailer 3£1,694 GBP
Brilliant Earth£1,739 GBP

35 data points across 16 retailers

16 retailers£190 GBP to £1,739 GBP

A
Cheapest Retailer
-
£190 GBP
$255 USD
A
Retailer 2
-
£213 GBP
$286 USD
View
Final sale: no returns
A
Retailer 3
-
£221 GBP
$296 USD
View
A
Retailer 4
-
£305 GBP
$408 USD
View
B+
Retailer 5
-
£331 GBP
$443 USD
View
A
Retailer 6
-
£332 GBP
$445 USD
View
A
Retailer 7
-
£429 GBP
€547 EUR
View
A
Retailer 8
-
£606 GBP
A$1,249 AUD
View
A
Retailer 9
-
£666 GBP
$893 USD
View
A
Retailer 10
-
£790 GBP
$1,058 USD
View
B+
Retailer 11
-
£838 GBP
$1,123 USD
View
B+
Retailer 12
-
£913 GBP
$1,223 USD
View
B+
Retailer 13
-
£1,050 GBP
View
Retailer 14
-
£1,601 GBP
$2,145 USD
View
Price last confirmed 10 days ago
B
Retailer 15
-
£1,694 GBP
$2,270 USD
View
Most Expensive
B
Brilliant Earth
21405665Y · Oct 31
£1,739 GBP
$2,330 USD
View
15 more retailers have this diamond
Prices start from £190 GBPSave up to £1,549 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
1.50ct Radiant
£190 GBP