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Round|Lab Grown|IGI

1.40ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG790625827

Shape and cutting style on the report: Round brilliant

Certificate IGI LG790625827

Diamond specifications and retailer prices

From £131 GBP
$176 USD
As of October 29, 2026
Save £634 GBP (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £766 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.4ct lab-grown round diamond

This 1.4ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG790625827 or 790625827. Listed at 14 retailers as of October 29, 2026, with prices from £131 to £766, a £634 spread on the same certified stone. MOH London lists it at £766. 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

1.40
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790625827
Dimensions7.20 × 7.16 × 4.37 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.20 mm7.16 mm1.40 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790625827
Side View
Table 59.0%Crown 35.7°Girdle: MediumPavilion 40.4°Culet: NoneDepth 60.9%

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 29
Current: £766 GBP|Low: £116 GBP|High: £766 GBP|Avg: £327 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
October 30, 2026
Retailer 5£131 GBP
Retailer 6£146 GBP
Retailer 12£152 GBP
Retailer 3£163 GBP
Retailer 9£163 GBP
Retailer 4£290 GBP
Retailer 7£291 GBP
Retailer 2£318 GBP
Retailer 10£356 GBP
Retailer 13£410 GBP
Retailer 11£523 GBP
Retailer 8£553 GBP
Retailer 14£564 GBP
MOH London£766 GBP

11 data points across 14 retailers

14 retailers£131 GBP to £766 GBP

A
Cheapest Retailer
-
£131 GBP
$176 USD
A
Retailer 2
-
£146 GBP
$196 USD
View
Final sale: no returns
A
Retailer 3
-
£152 GBP
$204 USD
View
A
Retailer 4
-
£163 GBP
$218 USD
View
A
Retailer 5
-
£163 GBP
$218 USD
View
B+
Retailer 6
-
£290 GBP
$388 USD
View
A
Retailer 7
-
£291 GBP
View
A
Retailer 8
-
£318 GBP
View
B+
Retailer 9
-
£356 GBP
$477 USD
View
B+
Retailer 10
-
£410 GBP
$549 USD
View
B+
Retailer 11
-
£523 GBP
$701 USD
View
B
Retailer 12
-
£553 GBP
$741 USD
View
B
Retailer 13
-
£564 GBP
$756 USD
View
Most Expensive
B
MOH London
LG790625827 · Oct 29
£766 GBP
View
13 more retailers have this diamond
Prices start from £131 GBPSave up to £634 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
1.40ct Round
£131 GBP