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Radiant|Lab Grown|IGI

1.35ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG728540141

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

Certificate IGI LG728540141

Diamond specifications and retailer prices

From £226 GBP
$303 USD
As of October 30, 2026
Save £1,468 GBP (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,694 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.35ct lab-grown radiant diamond

This 1.35ct 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 LG728540141 or 728540141. Listed at 22 retailers as of October 30, 2026, with prices from £226 to £1,694, a £1,468 spread on the same certified stone. Brilliant Earth lists it at £1,694. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.35
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.5°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728540141
Dimensions7.81 × 5.46 × 3.65 mm
L/W Ratio1.43
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.81 mm5.46 mm1.35 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728540141
Side View
Table 66.0%Crown 44.5°Girdle: Slightly ThickPavilion 34.9°Culet: NoneDepth 66.8%

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: £1,694 GBP|Low: £217 GBP|High: £1,694 GBP|Avg: £643 GBP|+1.3%
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
November 1, 2026
Retailer 3£226 GBP
Retailer 7£253 GBP
Retailer 4£281 GBP
Retailer 15£377 GBP
Retailer 12£396 GBP
Retailer 6£469 GBP
Retailer 9£475 GBP
Retailer 11£482 GBP
Retailer 8£498 GBP
Retailer 10£684 GBP
Retailer 14£862 GBP
Retailer 5£913 GBP
Retailer 2£1,124 GBP
Retailer 13£1,388 GBP
Brilliant Earth£1,694 GBP

45 data points across 15 retailers

22 retailers£226 GBP to £1,694 GBP

A
Cheapest Retailer
-
£226 GBP
$303 USD
A
Retailer 2
-
£253 GBP
$339 USD
View
Final sale: no returns
A
Retailer 3
-
£263 GBP
$352 USD
View
Retailer 4
-
£281 GBP
$376 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
£281 GBP
$376 USD
View
A
Retailer 6
-
£377 GBP
$505 USD
View
A
Retailer 7
-
£396 GBP
$530 USD
View
A
Retailer 8
-
£469 GBP
$628 USD
View
A
Retailer 9
-
£475 GBP
€606 EUR
View
A
Retailer 10
-
£482 GBP
ZAR 10,434 ZAR
View
A
Retailer 11
-
£498 GBP
View
B+
Retailer 12
-
£684 GBP
A$1,411 AUD
View
B+
Retailer 13
-
£725 GBP
$972 USD
View
B+
Retailer 14
-
£753 GBP
$1,009 USD
View
B+
Retailer 15
-
£862 GBP
$1,155 USD
View
B+
Retailer 16
-
£902 GBP
$1,208 USD
View
Retailer 17
-
£913 GBP
A$1,881 AUD
View
Price last confirmed 30 days ago
B+
Retailer 18
-
£937 GBP
$1,256 USD
View
B+
Retailer 19
-
£1,124 GBP
View
B
Retailer 20
-
£1,136 GBP
$1,523 USD
View
Retailer 21
-
£1,388 GBP
$1,860 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
15548548A · Oct 31
£1,694 GBP
$2,270 USD
View
21 more retailers have this diamond
Prices start from £226 GBPSave up to £1,468 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
1.35ct Radiant
£226 GBP