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Radiant|Lab Grown|IGI

4.07ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG662436739

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG662436739

Diamond specifications and retailer prices

From £330 GBP
$442 USD
As of October 30, 2026
Save £1,219 GBP (79%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,549 GBP at Adiamor · As of October 31, 2026
View at Adiamor

About this 4.07ct lab-grown radiant diamond

This 4.07ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG662436739 or 662436739. Listed at 14 retailers as of October 30, 2026, with prices from £330 to £1,549, a £1,219 spread on the same certified stone. Adiamor lists it at £1,549. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG662436739
Dimensions11.15 × 7.88 × 5.30 mm
L/W Ratio1.41
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.15 mm7.88 mm4.07 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG662436739
Side View
Table 65.0%Crown 44°Girdle: MED-STKPavilion 34.2°Culet: NoneDepth 67.3%

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 30
Current: £1,549 GBP|Low: £330 GBP|High: £5,247 GBP|Avg: £1,458 GBP|+11.9%
Adiamor
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 31, 2026
Retailer 7£330 GBP
Retailer 6£369 GBP
Retailer 12£381 GBP
Retailer 13£409 GBP
Retailer 17£449 GBP
Retailer 14£515 GBP
Retailer 5£641 GBP
Retailer 2£644 GBP
Retailer 16£666 GBP
Retailer 10£675 GBP
Retailer 11£1,099 GBP
Retailer 3£1,314 GBP
Retailer 15£1,509 GBP
Adiamor£1,549 GBP
Retailer 4£2,228 GBP
Retailer 8£4,162 GBP
Retailer 9£5,247 GBP

5 data points across 17 retailers

14 retailers£330 GBP to £1,549 GBP

A
Cheapest Retailer
-
£330 GBP
$442 USD
A
Retailer 2
-
£369 GBP
$495 USD
View
A
Retailer 3
-
£381 GBP
View
A
Retailer 4
-
£409 GBP
$548 USD
View
A
Retailer 5
-
£449 GBP
HK$4,700 HKD
View
A
Retailer 6
-
£515 GBP
$690 USD
View
B+
Retailer 7
-
£641 GBP
$859 USD
View
A
Retailer 8
-
£644 GBP
€822 EUR
View
A
Retailer 9
-
£666 GBP
$892 USD
View
A
Retailer 10
-
£675 GBP
View
B+
Retailer 11
-
£1,099 GBP
$1,472 USD
View
B
Retailer 12
-
£1,314 GBP
$1,760 USD
View
B
Retailer 13
-
£1,509 GBP
View
Most Expensive
B
Adiamor
D-82835044 · Oct 31
£1,549 GBP
$2,075 USD
View
13 more retailers have this diamond
Prices start from £330 GBPSave up to £1,219 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
4.07ct Radiant
£330 GBP