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Oval|Lab Grown|IGI

0.51ct E SI1 Oval Lab Grown Diamond

EX • E/SI1 • IGI LG843636789

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG843636789

Diamond specifications and retailer prices

From £77 GBP
As of October 31, 2026
Save £528 GBP (87%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £605 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct lab-grown oval diamond

This 0.51ct lab-grown oval sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG843636789 or 843636789. Listed at 11 retailers as of October 31, 2026, with prices from £77 to £605, a £528 spread on the same certified stone. MOH London lists it at £605. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843636789
Dimensions6.57 × 4.48 × 2.76 mm
L/W Ratio1.47
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.57 mm4.48 mm0.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843636789
Side View
Table 61.0%Crown 34.4°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.6%

Caratlytics Score

How it works →
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 31
Current: £605 GBP|Low: £75 GBP|High: £608 GBP|Avg: £232 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 12£75 GBP
Retailer 7£77 GBP
Retailer 4£112 GBP
Retailer 2£152 GBP
Retailer 5£155 GBP
Retailer 9£194 GBP
Retailer 10£199 GBP
Retailer 8£202 GBP
Retailer 3£235 GBP
Retailer 6£264 GBP
Retailer 11£295 GBP
MOH London£605 GBP

13 data points across 12 retailers

11 retailers£77 GBP to £605 GBP

A
Cheapest Retailer
-
£77 GBP
B+
Retailer 2
-
£112 GBP
View
A
Retailer 3
-
£152 GBP
View
A
Retailer 4
-
£155 GBP
View
A
Retailer 5
-
£194 GBP
View
A
Retailer 6
-
£199 GBP
View
A
Retailer 7
-
£202 GBP
View
B+
Retailer 8
-
£235 GBP
View
B+
Retailer 9
-
£264 GBP
View
B
Retailer 10
-
£295 GBP
View
Most Expensive
B
MOH London
LG843636789 · Nov 2
£605 GBP
View
10 more retailers have this diamond
Prices start from £77 GBPSave up to £528 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 Oval
£77 GBP