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Radiant|Lab Grown|IGI

1.37ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG722578619

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

Certificate IGI LG722578619

Diamond specifications and retailer prices

From £198 GBP
$265 USD
As of October 30, 2026
Save £1,586 GBP (89%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,784 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.37ct lab-grown radiant diamond

This 1.37ct 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 LG722578619 or 722578619. Listed at 24 retailers as of October 30, 2026, with prices from £198 to £1,784, a £1,586 spread on the same certified stone. Brilliant Earth lists it at £1,784. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.37
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle33.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG722578619
Dimensions5.50 × 5.50 × 3.65 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
5.50 mm5.50 mm1.37 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG722578619
Side View
Table 66.0%Crown 39.8°Girdle: MediumPavilion 33.6°Culet: NoneDepth 66.4%

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: £1,784 GBP|Low: £190 GBP|High: £1,806 GBP|Avg: £627 GBP|+9.1%
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 4£198 GBP
Retailer 5£246 GBP
Retailer 7£260 GBP
Retailer 3£330 GBP
Retailer 12£366 GBP
Retailer 11£422 GBP
Retailer 9£439 GBP
Retailer 8£471 GBP
Retailer 10£598 GBP
Retailer 14£603 GBP
Retailer 6£790 GBP
Retailer 2£985 GBP
Retailer 13£1,370 GBP
Brilliant Earth£1,784 GBP

34 data points across 14 retailers

24 retailers£198 GBP to £1,784 GBP

A
Cheapest Retailer
-
£198 GBP
$265 USD
A
Retailer 2
-
£222 GBP
$297 USD
View
Final sale: no returns
A
Retailer 3
-
£230 GBP
$308 USD
View
Retailer 4
-
£246 GBP
$329 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
£246 GBP
$329 USD
View
A
Retailer 6
-
£260 GBP
View
A
Retailer 7
-
£330 GBP
$442 USD
View
A
Retailer 8
-
£366 GBP
$490 USD
View
A
Retailer 9
-
£422 GBP
ZAR 9,136 ZAR
View
A
Retailer 10
-
£437 GBP
$586 USD
View
A
Retailer 11
-
£439 GBP
€560 EUR
View
A
Retailer 12
-
£471 GBP
View
Retailer 13
-
£597 GBP
A$1,230 AUD
View
Price last confirmed 35 days ago
A
Retailer 14
-
£598 GBP
A$1,232 AUD
View
B+
Retailer 15
-
£603 GBP
$808 USD
View
B+
Retailer 16
-
£734 GBP
$984 USD
View
B+
Retailer 17
-
£790 GBP
$1,058 USD
View
B+
Retailer 18
-
£828 GBP
$1,109 USD
View
B+
Retailer 19
-
£985 GBP
View
B
Retailer 20
-
£1,047 GBP
$1,402 USD
View
Retailer 21
-
£1,370 GBP
$1,835 USD
View
Price last confirmed 13 days ago
Retailer 22
-
£1,461 GBP
$1,958 USD
View
Price last confirmed 83 days ago
Retailer 23
-
£1,634 GBP
$2,190 USD
View
Price last confirmed 24 days ago
Most Expensive
B
Brilliant Earth
21313421A · Oct 31
£1,784 GBP
$2,390 USD
View
23 more retailers have this diamond
Prices start from £198 GBPSave up to £1,586 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
1.37ct Radiant
£198 GBP