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Radiant|Lab Grown|IGI

1.31ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG602388297

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

Certificate IGI LG602388297

Diamond specifications and retailer prices

From £213 GBP
$285 USD
As of October 30, 2026
Save £1,414 GBP (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,627 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.31ct lab-grown radiant diamond

This 1.31ct 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 LG602388297 or 602388297. Listed at 22 retailers as of October 30, 2026, with prices from £213 to £1,627, a £1,414 spread on the same certified stone. Brilliant Earth lists it at £1,627. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG602388297
Dimensions7.96 × 5.44 × 3.63 mm
L/W Ratio1.46
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
7.96 mm5.44 mm1.31 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG602388297
Side View
Table 66.0%Crown 43°Girdle: MediumPavilion 35.8°Culet: NoneDepth 66.7%

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: £1,627 GBP|Low: £204 GBP|High: £1,627 GBP|Avg: £567 GBP|+0.9%
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
November 1, 2026
Retailer 3£213 GBP
Retailer 7£247 GBP
Retailer 4£264 GBP
Retailer 8£264 GBP
Retailer 10£280 GBP
Retailer 15£381 GBP
Retailer 9£432 GBP
Retailer 6£434 GBP
Retailer 14£453 GBP
Retailer 2£466 GBP
Retailer 13£642 GBP
Retailer 16£811 GBP
Retailer 5£848 GBP
Retailer 11£886 GBP
Retailer 12£1,063 GBP
Brilliant Earth£1,627 GBP

39 data points across 16 retailers

22 retailers£213 GBP to £1,627 GBP

A
Cheapest Retailer
-
£213 GBP
$285 USD
A
Retailer 2
-
£238 GBP
$319 USD
View
Final sale: no returns
A
Retailer 3
-
£247 GBP
$331 USD
View
A
Retailer 4
-
£264 GBP
$354 USD
View
A
Retailer 5
-
£264 GBP
$354 USD
View
A
Retailer 6
-
£280 GBP
View
A
Retailer 7
-
£381 GBP
$510 USD
View
A
Retailer 8
-
£432 GBP
€551 EUR
View
A
Retailer 9
-
£434 GBP
$582 USD
View
A
Retailer 10
-
£453 GBP
ZAR 9,813 ZAR
View
A
Retailer 11
-
£466 GBP
View
A
Retailer 12
-
£508 GBP
$681 USD
View
B+
Retailer 13
-
£642 GBP
A$1,323 AUD
View
B+
Retailer 14
-
£684 GBP
$917 USD
View
B+
Retailer 15
-
£811 GBP
$1,086 USD
View
B+
Retailer 16
-
£848 GBP
$1,136 USD
View
B+
Retailer 17
-
£885 GBP
$1,186 USD
View
B+
Retailer 18
-
£886 GBP
A$1,826 AUD
View
B
Retailer 19
-
£974 GBP
$1,305 USD
View
B
Retailer 20
-
£1,024 GBP
View
B+
Retailer 21
-
£1,063 GBP
View
Most Expensive
B
Brilliant Earth
8263391A · Oct 31
£1,627 GBP
$2,180 USD
View
21 more retailers have this diamond
Prices start from £213 GBPSave up to £1,414 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
1.31ct Radiant
£213 GBP