Radiant|Lab Grown|IGI

0.51ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG790630389

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

Certificate IGI LG790630389

Diamond specifications and retailer prices

From £108 GBP
$145 USD
As of October 30, 2026
Save £526 GBP (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £634 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.51ct lab-grown radiant diamond

This 0.51ct lab-grown radiant sits in the half to three-quarter carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG790630389 or 790630389. Listed at 19 retailers as of October 29, 2026, with prices from £108 to £634, a £526 spread on the same certified stone. MOH London lists it at £634. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle50.2°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790630389
Dimensions5.56 × 3.91 × 2.72 mm
L/W Ratio1.42
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.56 mm3.91 mm0.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790630389
Side View
Table 67.0%Crown 50.2°Girdle: MediumPavilion 38.4°Culet: NoneDepth 69.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £634 GBP|Low: £108 GBP|High: £651 GBP|Avg: £297 GBP|-2.6%
MOH London
Retailer 2
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Retailer 19
October 31, 2026
Retailer 16£108 GBP
Retailer 3£121 GBP
Retailer 9£128 GBP
Retailer 19£135 GBP
Retailer 8£137 GBP
Retailer 18£183 GBP
Retailer 2£230 GBP
Retailer 6£245 GBP
Retailer 14£249 GBP
Retailer 10£263 GBP
Retailer 11£336 GBP
Retailer 7£345 GBP
Retailer 15£357 GBP
Retailer 4£372 GBP
Retailer 13£427 GBP
Retailer 5£434 GBP
Retailer 12£456 GBP
Retailer 17£473 GBP
MOH London£634 GBP

20 data points across 19 retailers

19 retailers£108 GBP to £634 GBP

A
Cheapest Retailer
-
£108 GBP
$145 USD
A
Retailer 2
-
£121 GBP
$162 USD
View
Final sale: no returns
A
Retailer 3
-
£128 GBP
$171 USD
View
A
Retailer 4
-
£135 GBP
$181 USD
View
A
Retailer 5
-
£137 GBP
$183 USD
View
A
Retailer 6
-
£183 GBP
$245 USD
View
A
Retailer 7
-
£230 GBP
View
A
Retailer 8
-
£245 GBP
ZAR 5,308 ZAR
View
A
Retailer 9
-
£249 GBP
$333 USD
View
Retailer 10
-
£263 GBP
€336 EUR
View
Price last confirmed 7 days ago
B+
Retailer 11
-
£336 GBP
A$693 AUD
View
B+
Retailer 12
-
£345 GBP
A$712 AUD
View
B+
Retailer 13
-
£357 GBP
$479 USD
View
B+
Retailer 14
-
£372 GBP
SGD 674 SGD
View
B+
Retailer 15
-
£427 GBP
$572 USD
View
B+
Retailer 16
-
£434 GBP
$581 USD
View
B
Retailer 17
-
£456 GBP
$611 USD
View
B+
Retailer 18
-
£473 GBP
$634 USD
View
Most Expensive
B
MOH London
LG790630389 · Oct 29
£634 GBP
View
18 more retailers have this diamond
Prices start from £108 GBPSave up to £526 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
0.51ct Radiant
£108 GBP