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Oval|Lab Grown|IGI

4.05ct G SI1 Oval Lab Grown Diamond

ID • G/SI1 • IGI LG660414099

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG660414099

Diamond specifications and retailer prices

From £2,814 GBP
$3,770 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: £2,814 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 4.05ct lab-grown oval diamond

This 4.05ct lab-grown oval sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG660414099 or 660414099. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

4.05
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG660414099
Dimensions12.92 × 8.97 × 5.57 mm
L/W Ratio1.44
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.92 mm8.97 mm4.05 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660414099
Side View
Table 60.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.1%

Caratlytics Score

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C
Average
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Price History

Last verified: Oct 29
Current: £2,814 GBP|Low: £2,814 GBP|High: £2,814 GBP|Avg: £2,814 GBP
December 30, 2025
Brilliant Earth£2,814 GBP

4 data points across 1 retailer

1 retailer

C
Brilliant Earth
13717634B · Oct 29
£2,814 GBP
$3,770 USD
View

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C
4.05ct Oval
£2,814 GBP