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Radiant|Lab Grown|IGI

4.07ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG847660209

Certificate IGI LG847660209

Diamond specifications and retailer prices

From £2,739 GBP
$3,670 USD
As of October 30, 2026
Save £2,090 GBP (43%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £4,829 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 4.07ct lab-grown radiant diamond

This 4.07ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG847660209 or 847660209. Listed at 2 retailers as of October 28, 2026, with prices from £2,739 to £4,829, a £2,090 spread on the same certified stone. Brilliant Earth lists it at £4,829. 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

4.07
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG847660209
Dimensions12.07 × 8.44 × 5.62 mm
L/W Ratio1.43
Top View
12.07 mm8.44 mm4.07 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847660209
Side View
Table 68.0%CrownGirdle: MediumPavilionCulet: NoneDepth 66.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: £2,739 GBP|Low: £2,739 GBP|High: £4,560 GBP|Avg: £3,650 GBP|-39.9%
October 30, 2026
Brilliant Earth£2,739 GBP

2 data points across 1 retailer

2 retailers£2,739 GBP to £4,829 GBP

B
Cheapest Retailer
-
£2,739 GBP
$3,670 USD
Most Expensive
B
Brilliant Earth
22186791A · Oct 28
£4,829 GBP
$6,470 USD
View
1 more retailer has this diamond
Prices start from £2,739 GBPSave up to £2,090 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.

B
4.07ct Radiant
£2,739 GBP