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4.01ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG783628127

Shape and cutting style on the report: Round brilliant

Certificate IGI LG783628127

Diamond specifications and retailer prices

From £599 GBP
$802 USD
As of October 30, 2026
Save £1,273 GBP (68%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,872 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 4.01ct lab-grown round diamond

This 4.01ct lab-grown round 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 LG783628127 or 783628127. Listed at 6 retailers as of October 29, 2026, with prices from £599 to £1,872, a £1,273 spread on the same certified stone. MOH London lists it at £1,872. 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

4.01
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783628127
Dimensions10.13 × 10.09 × 6.30 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.13 mm10.09 mm4.01 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783628127
Side View
Table 56.0%Crown 35.3°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,872 GBP|Low: £599 GBP|High: £1,884 GBP|Avg: £1,027 GBP|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 3£599 GBP
Retailer 4£696 GBP
Retailer 2£733 GBP
Retailer 5£917 GBP
Retailer 6£1,455 GBP
MOH London£1,872 GBP

41 data points across 6 retailers

6 retailers£599 GBP to £1,872 GBP

B+
Cheapest Retailer
-
£599 GBP
$802 USD
A
Retailer 2
-
£696 GBP
$932 USD
View
A
Retailer 3
-
£733 GBP
View
B+
Retailer 4
-
£917 GBP
$1,229 USD
View
B
Retailer 5
-
£1,455 GBP
$1,950 USD
View
Most Expensive
B
MOH London
LG783628127 · Oct 29
£1,872 GBP
View
5 more retailers have this diamond
Prices start from £599 GBPSave up to £1,273 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
4.01ct Round
£599 GBP