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Radiant|Lab Grown|IGI

4.07ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG692506621

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

Certificate IGI LG692506621

Diamond specifications and retailer prices

From £316 GBP
$423 USD
As of October 30, 2026
Save £1,132 GBP (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,447 GBP at MOH London · As of October 29, 2026
View at MOH London

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 LG692506621 or 692506621. Listed at 12 retailers as of October 29, 2026, with prices from £316 to £1,447, a £1,132 spread on the same certified stone. MOH London lists it at £1,447. 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
Crown angle43.9°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG692506621
Dimensions11.49 × 7.90 × 5.16 mm
L/W Ratio1.45
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.49 mm7.90 mm4.07 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG692506621
Side View
Table 64.0%Crown 43.9°Girdle: MediumPavilion 34.4°Culet: NoneDepth 65.3%

Caratlytics Score

How it works →
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: £1,447 GBP|Low: £316 GBP|High: £5,068 GBP|Avg: £1,372 GBP
MOH London
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
October 30, 2026
Retailer 5£316 GBP
Retailer 2£328 GBP
Retailer 4£354 GBP
Retailer 10£392 GBP
Retailer 13£439 GBP
Retailer 11£500 GBP
Retailer 3£618 GBP
Retailer 9£646 GBP
Retailer 12£651 GBP
Retailer 6£929 GBP
Retailer 15£1,037 GBP
Retailer 14£1,260 GBP
MOH London£1,447 GBP
Retailer 16£1,858 GBP
Retailer 7£3,650 GBP
Retailer 8£5,068 GBP

4 data points across 16 retailers

12 retailers£316 GBP to £1,447 GBP

A
Cheapest Retailer
-
£316 GBP
$423 USD
A
Retailer 2
-
£328 GBP
View
A
Retailer 3
-
£354 GBP
$474 USD
View
A
Retailer 4
-
£392 GBP
$525 USD
View
A
Retailer 5
-
£439 GBP
HK$4,600 HKD
View
A
Retailer 6
-
£500 GBP
$670 USD
View
B+
Retailer 7
-
£618 GBP
$828 USD
View
A
Retailer 8
-
£646 GBP
View
A
Retailer 9
-
£651 GBP
$872 USD
View
B+
Retailer 10
-
£1,037 GBP
$1,390 USD
View
B+
Retailer 11
-
£1,260 GBP
$1,688 USD
View
Most Expensive
B+
MOH London
LG692506621 · Oct 29
£1,447 GBP
View
11 more retailers have this diamond
Prices start from £316 GBPSave up to £1,132 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
£316 GBP