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Radiant|Lab Grown|IGI

1.51ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG605337352

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

Certificate IGI LG605337352

Diamond specifications and retailer prices

From £216 GBP
$290 USD
As of October 30, 2026
Save £1,776 GBP (89%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,993 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.51ct lab-grown radiant diamond

This 1.51ct 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 LG605337352 or 605337352. Listed at 24 retailers as of October 30, 2026, with prices from £216 to £1,993, a £1,776 spread on the same certified stone. Brilliant Earth lists it at £1,993. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.9°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605337352
Dimensions8.05 × 5.77 × 3.84 mm
L/W Ratio1.40
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
8.05 mm5.77 mm1.51 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605337352
Side View
Table 67.0%Crown 46.9°Girdle: MediumPavilion 36.3°Culet: NoneDepth 66.6%

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: £1,993 GBP|Low: £206 GBP|High: £2,269 GBP|Avg: £743 GBP|-9.8%
Brilliant Earth
Retailer 2
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Retailer 22
November 1, 2026
Retailer 6£216 GBP
Retailer 19£243 GBP
Retailer 3£251 GBP
Retailer 9£269 GBP
Retailer 14£269 GBP
Retailer 22£384 GBP
Retailer 11£441 GBP
Retailer 21£461 GBP
Retailer 8£463 GBP
Retailer 13£475 GBP
Retailer 16£497 GBP
Retailer 20£624 GBP
Retailer 10£721 GBP
Retailer 5£755 GBP
Retailer 7£863 GBP
Retailer 15£899 GBP
Retailer 17£1,032 GBP
Retailer 18£1,067 GBP
Retailer 2£1,076 GBP
Retailer 12£1,105 GBP
Retailer 4£1,702 GBP
Brilliant Earth£1,993 GBP

36 data points across 22 retailers

24 retailers£216 GBP to £1,993 GBP

A
Cheapest Retailer
-
£216 GBP
$290 USD
A
Retailer 2
-
£243 GBP
$325 USD
View
Final sale: no returns
A
Retailer 3
-
£251 GBP
$336 USD
View
A
Retailer 4
-
£269 GBP
$360 USD
View
A
Retailer 5
-
£269 GBP
$360 USD
View
A
Retailer 6
-
£384 GBP
$515 USD
View
A
Retailer 7
-
£441 GBP
$591 USD
View
A
Retailer 8
-
£461 GBP
ZAR 9,982 ZAR
View
A
Retailer 9
-
£463 GBP
$620 USD
View
A
Retailer 10
-
£475 GBP
View
A
Retailer 11
-
£497 GBP
€634 EUR
View
A
Retailer 12
-
£624 GBP
A$1,287 AUD
View
A
Retailer 13
-
£721 GBP
$966 USD
View
B+
Retailer 14
-
£755 GBP
$1,012 USD
View
B+
Retailer 15
-
£863 GBP
$1,156 USD
View
B+
Retailer 16
-
£884 GBP
$1,184 USD
View
B+
Retailer 17
-
£899 GBP
$1,205 USD
View
B+
Retailer 18
-
£987 GBP
$1,322 USD
View
B+
Retailer 19
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£1,032 GBP
$1,383 USD
View
B+
Retailer 20
-
£1,064 GBP
View
B+
Retailer 21
-
£1,067 GBP
A$2,200 AUD
View
B+
Retailer 22
-
£1,076 GBP
View
B+
Retailer 23
-
£1,105 GBP
$1,481 USD
View
Most Expensive
B
Brilliant Earth
14717190A · Oct 31
£1,993 GBP
$2,670 USD
View
23 more retailers have this diamond
Prices start from £216 GBPSave up to £1,776 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
1.51ct Radiant
£216 GBP