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Emerald|Lab Grown|IGI

1.42ct E SI1 Emerald Lab Grown Diamond

EX • E/SI1 • IGI LG564373944

Shape and cutting style on the report: Emerald cut

Certificate IGI LG564373944

Diamond specifications and retailer prices

From £126 GBP
$169 USD
As of October 30, 2026
Save £682 GBP (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £809 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 1.42ct lab-grown emerald diamond

This 1.42ct lab-grown emerald 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 LG564373944 or 564373944. Listed at 12 retailers as of October 25, 2026, with prices from £126 to £809, a £682 spread on the same certified stone. MOH London lists it at £809. 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

1.42
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31°
Pavilion angle42.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG564373944
Dimensions7.25 × 5.35 × 3.55 mm
L/W Ratio1.36
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.25 mm5.35 mm1.42 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG564373944
Side View
Table 65.5%Crown 31°Girdle: MediumPavilion 42.6°Culet: LargeDepth 66.4%

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: £809 GBP|Low: £122 GBP|High: £827 GBP|Avg: £313 GBP|-2.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 11£126 GBP
Retailer 4£141 GBP
Retailer 3£146 GBP
Retailer 6£157 GBP
Retailer 9£157 GBP
Retailer 12£280 GBP
Retailer 5£285 GBP
Retailer 2£313 GBP
Retailer 10£349 GBP
Retailer 7£531 GBP
Retailer 8£555 GBP
MOH London£809 GBP

45 data points across 12 retailers

12 retailers£126 GBP to £809 GBP

A
Cheapest Retailer
-
£126 GBP
$169 USD
A
Retailer 2
-
£141 GBP
$189 USD
View
Final sale: no returns
A
Retailer 3
-
£146 GBP
$196 USD
View
A
Retailer 4
-
£157 GBP
$210 USD
View
A
Retailer 5
-
£157 GBP
$210 USD
View
B+
Retailer 6
-
£280 GBP
$375 USD
View
A
Retailer 7
-
£285 GBP
€364 EUR
View
A
Retailer 8
-
£313 GBP
View
B+
Retailer 9
-
£349 GBP
$467 USD
View
B+
Retailer 10
-
£531 GBP
$712 USD
View
B+
Retailer 11
-
£555 GBP
$744 USD
View
Most Expensive
B
MOH London
LG564373944 · Oct 25
£809 GBP
View
11 more retailers have this diamond
Prices start from £126 GBPSave up to £682 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
1.42ct Emerald
£126 GBP