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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 €269 EUR
$300 USD
As of October 31, 2026
Save €1,165 EUR (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €1,433 EUR 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 €269 to €1,433, a €1,165 spread on the same certified stone. MOH London lists it at €1,433. 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
Color
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 31
Current: €1,433 EUR|Low: €228 EUR|High: €1,444 EUR|Avg: €565 EUR|-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€269 EUR
Retailer 6€287 EUR
Retailer 9€320 EUR
Retailer 7€356 EUR
Retailer 10€356 EUR
Retailer 8€578 EUR
Retailer 2€635 EUR
Retailer 4€647 EUR
Retailer 5€1,044 EUR
MOH London€1,433 EUR

42 data points across 10 retailers

12 retailers€269 EUR to €1,433 EUR

A
Cheapest Retailer
-
€269 EUR
$300 USD
A
Retailer 2
-
€287 EUR
$321 USD
View
B+
Retailer 3
-
€320 EUR
$358 USD
View
Final sale: no returns
B+
Retailer 4
-
€333 EUR
$372 USD
View
B+
Retailer 5
-
€356 EUR
$398 USD
View
B+
Retailer 6
-
€356 EUR
$398 USD
View
B
Retailer 7
-
€578 EUR
$646 USD
View
B
Retailer 8
-
€635 EUR
£559 GBP
View
B
Retailer 9
-
€647 EUR
View
B
Retailer 10
-
€1,044 EUR
$1,166 USD
View
B
Retailer 11
-
€1,144 EUR
$1,278 USD
View
Most Expensive
B
MOH London
LG436046400 · Oct 29
€1,433 EUR
£1,261 GBP
View
11 more retailers have this diamond
Prices start from €269 EURSave up to €1,165 EUR

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
€269 EUR