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Oval|Lab Grown|IGI

5.18ct G SI1 Oval Lab Grown Diamond

ID • G/SI1 • IGI LG597381377

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG597381377

Diamond specifications and retailer prices

From €1,690 EUR
£1,486 GBP
As of October 31, 2026
Save €4,513 EUR (73%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €6,203 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 5.18ct lab-grown oval diamond

This 5.18ct lab-grown oval sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG597381377 or 597381377. Listed at 9 retailers as of October 31, 2026, with prices from €1,690 to €6,203, a €4,513 spread on the same certified stone. Brilliant Earth lists it at €6,203. 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

5.18
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG597381377
Dimensions14.52 × 9.53 × 5.81 mm
L/W Ratio1.52
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
14.52 mm9.53 mm5.18 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG597381377
Side View
Table 57.0%Crown 36.9°Girdle: MED-STKPavilion 40°Culet: NoneDepth 61.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €6,203 EUR|Low: €1,247 EUR|High: €6,400 EUR|Avg: €2,974 EUR|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 3€1,247 EUR
Retailer 2€1,690 EUR
Retailer 11€1,797 EUR
Retailer 4€1,848 EUR
Retailer 6€1,854 EUR
Retailer 10€2,364 EUR
Retailer 8€3,597 EUR
Retailer 7€3,732 EUR
Retailer 5€3,750 EUR
Retailer 9€4,472 EUR
Brilliant Earth€6,203 EUR

30 data points across 11 retailers

9 retailers€1,690 EUR to €6,203 EUR

B+
Cheapest Retailer
-
€1,690 EUR
£1,486 GBP
B
Retailer 2
-
€1,848 EUR
$2,065 USD
View
B
Retailer 3
-
€1,854 EUR
$2,071 USD
View
B
Retailer 4
-
€2,364 EUR
$2,641 USD
View
B
Retailer 5
-
€3,597 EUR
$4,019 USD
View
B
Retailer 6
-
€3,732 EUR
SGD 5,635 SGD
View
B
Retailer 7
-
€3,750 EUR
£3,299 GBP
View
B
Retailer 8
-
€4,472 EUR
$4,996 USD
View
Most Expensive
B
Brilliant Earth
17327473A · Oct 31
€6,203 EUR
$6,930 USD
View
8 more retailers have this diamond
Prices start from €1,690 EURSave up to €4,513 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.

B+
5.18ct Oval
€1,690 EUR