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Oval|Lab Grown|IGI

4.08ct F SI2 Oval Lab Grown Diamond

ID • F/SI2 • IGI LG584361992

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG584361992

Diamond specifications and retailer prices

From £399 GBP
$534 USD
As of October 27, 2026
Save £3,094 GBP (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,493 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 4.08ct lab-grown oval diamond

This 4.08ct lab-grown oval sits in the three to five carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG584361992 or 584361992. Listed at 13 retailers as of October 27, 2026, with prices from £399 to £3,493, a £3,094 spread on the same certified stone. Brilliant Earth lists it at £3,493. 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

4.08
Carat
F
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG584361992
Dimensions12.95 × 9.00 × 5.66 mm
L/W Ratio1.44
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
12.95 mm9.00 mm4.08 ctF / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG584361992
Side View
Table 59.0%Crown 35.3°Girdle: MediumPavilion 41°Culet: NoneDepth 62.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: £3,791 GBP|Low: £399 GBP|High: £3,791 GBP|Avg: £1,343 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 27, 2026
Retailer 15£399 GBP
Retailer 12£446 GBP
Retailer 2£487 GBP
Retailer 5£494 GBP
Retailer 14£730 GBP
Retailer 9£755 GBP
Retailer 13£790 GBP
Retailer 10£848 GBP
Retailer 6£965 GBP
Retailer 7£1,257 GBP
Retailer 17£1,275 GBP
Retailer 3£1,399 GBP
Retailer 4£1,435 GBP
Retailer 16£2,363 GBP
Retailer 11£2,372 GBP
Retailer 8£2,687 GBP
Brilliant Earth£3,791 GBP

7 data points across 17 retailers

13 retailers£399 GBP to £3,493 GBP

A
Cheapest Retailer
-
£399 GBP
$534 USD
A
Retailer 2
-
£446 GBP
$598 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
£487 GBP
View
A
Retailer 4
-
£494 GBP
$662 USD
View
B+
Retailer 5
-
£730 GBP
$978 USD
View
A
Retailer 6
-
£790 GBP
$1,058 USD
View
A
Retailer 7
-
£848 GBP
View
B+
Retailer 8
-
£1,275 GBP
$1,709 USD
View
B+
Retailer 9
-
£1,399 GBP
$1,874 USD
View
B+
Retailer 10
-
£1,435 GBP
$1,923 USD
View
B
Retailer 11
-
£2,363 GBP
$3,166 USD
View
B
Retailer 12
-
£2,372 GBP
View
Most Expensive
B
Brilliant Earth
22301266A · Oct 28
£3,493 GBP
$4,680 USD
View
12 more retailers have this diamond
Prices start from £399 GBPSave up to £3,094 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
4.08ct Oval
£399 GBP