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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 $1,888 USD
£1,486 GBP
As of November 2, 2026
Save $5,042 USD (73%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,930 USD 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 $1,888 to $6,930, a $5,042 spread on the same certified stone. Brilliant Earth lists it at $6,930. 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: Nov 2
Current: $6,930 USD|Low: $1,393 USD|High: $7,150 USD|Avg: $3,322 USD|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3$1,393 USD
Retailer 2$1,888 USD
Retailer 11$2,008 USD
Retailer 5$2,065 USD
Retailer 6$2,071 USD
Retailer 10$2,641 USD
Retailer 8$4,019 USD
Retailer 7$4,170 USD
Retailer 4$4,183 USD
Retailer 9$4,996 USD
Brilliant Earth$6,930 USD

32 data points across 11 retailers

9 retailers$1,888 USD to $6,930 USD

B+
Cheapest Retailer
-
$1,888 USD
£1,486 GBP
B
Retailer 2
-
$2,065 USD
View
B
Retailer 3
-
$2,071 USD
View
Retailer 4
-
$2,641 USD
View
Price last confirmed 7 days ago
B
Retailer 5
-
$4,019 USD
View
B
Retailer 6
-
$4,170 USD
SGD 5,635 SGD
View
B
Retailer 7
-
$4,183 USD
£3,294 GBP
View
B
Retailer 8
-
$4,996 USD
View
Most Expensive
B
Brilliant Earth
17327473A · Oct 31
$6,930 USD
View
8 more retailers have this diamond
Prices start from $1,888 USDSave up to $5,042 USD

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
$1,888 USD