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Oval|Lab Grown|IGI

0.51ct G SI1 Oval Lab Grown Diamond

ID • G/SI1 • IGI LG436046400

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG436046400

Diamond specifications and retailer prices

From £224 GBP
$300 USD
As of October 30, 2026
Save £971 GBP (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,195 GBP at MOH London · As of October 29, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436046400 or 436046400. Listed at 12 retailers as of October 29, 2026, with prices from £224 to £1,195, a £971 spread on the same certified stone. MOH London lists it at £1,195. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436046400
Dimensions6.37 × 4.51 × 2.83 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.37 mm4.51 mm0.51 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436046400
Side View
Table 57.5%Crown 33.7°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 62.7%

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: £1,195 GBP|Low: £190 GBP|High: £1,204 GBP|Avg: £470 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 3£224 GBP
Retailer 6£240 GBP
Retailer 9£267 GBP
Retailer 7£297 GBP
Retailer 10£297 GBP
Retailer 8£482 GBP
Retailer 2£530 GBP
Retailer 4£539 GBP
Retailer 5£870 GBP
MOH London£1,195 GBP

43 data points across 10 retailers

12 retailers£224 GBP to £1,195 GBP

A
Cheapest Retailer
-
£224 GBP
$300 USD
A
Retailer 2
-
£240 GBP
$321 USD
View
B+
Retailer 3
-
£267 GBP
$358 USD
View
Final sale: no returns
B+
Retailer 4
-
£278 GBP
$372 USD
View
B+
Retailer 5
-
£297 GBP
$398 USD
View
B+
Retailer 6
-
£297 GBP
$398 USD
View
B
Retailer 7
-
£482 GBP
$646 USD
View
B
Retailer 8
-
£530 GBP
View
B
Retailer 9
-
£539 GBP
€688 EUR
View
B
Retailer 10
-
£870 GBP
$1,166 USD
View
B
Retailer 11
-
£954 GBP
$1,278 USD
View
Most Expensive
B
MOH London
LG436046400 · Oct 29
£1,195 GBP
View
11 more retailers have this diamond
Prices start from £224 GBPSave up to £971 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
£224 GBP