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Oval|Lab Grown|IGI

4.03ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG576331508

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG576331508

Diamond specifications and retailer prices

From £511 GBP
$685 USD
As of October 31, 2026
Save £3,601 GBP (88%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,112 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.03ct lab-grown oval diamond

This 4.03ct lab-grown oval sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG576331508 or 576331508. Listed at 11 retailers as of October 31, 2026, with prices from £511 to £4,112, a £3,601 spread on the same certified stone. Brilliant Earth lists it at £4,112. 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

4.03
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG576331508
Dimensions12.74 × 9.17 × 5.59 mm
L/W Ratio1.39
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
12.74 mm9.17 mm4.03 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG576331508
Side View
Table 59.0%Crown 35.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £4,112 GBP|Low: £363 GBP|High: £4,239 GBP|Avg: £1,039 GBP|+0.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 11£363 GBP
Retailer 3£403 GBP
Retailer 6£511 GBP
Retailer 10£633 GBP
Retailer 5£654 GBP
Retailer 4£659 GBP
Retailer 9£712 GBP
Retailer 8£846 GBP
Retailer 7£1,130 GBP
Retailer 2£1,480 GBP
Brilliant Earth£4,112 GBP

34 data points across 11 retailers

11 retailers£511 GBP to £4,112 GBP

A
Cheapest Retailer
-
£511 GBP
$685 USD
B+
Retailer 2
-
£633 GBP
$848 USD
View
A
Retailer 3
-
£654 GBP
€834 EUR
View
A
Retailer 4
-
£659 GBP
View
A
Retailer 5
-
£712 GBP
$954 USD
View
Retailer 6
-
£784 GBP
View
Price last confirmed 20 days ago
A
Retailer 7
-
£846 GBP
$1,133 USD
View
B+
Retailer 8
-
£1,130 GBP
$1,514 USD
View
Retailer 9
-
£1,295 GBP
$1,735 USD
View
Price last confirmed 35 days ago
B+
Retailer 10
-
£1,480 GBP
View
Most Expensive
B
Brilliant Earth
7623579A · Oct 31
£4,112 GBP
$5,510 USD
View
10 more retailers have this diamond
Prices start from £511 GBPSave up to £3,601 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
4.03ct Oval
£511 GBP