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Emerald|Lab Grown|IGI

1.00ct J SI2 Emerald Lab Grown Diamond

ID • J/SI2 • IGI LG400943064

Shape and cutting style on the report: Emerald cut

Certificate IGI LG400943064

Diamond specifications and retailer prices

From £584 GBP
$783 USD
As of October 29, 2026
Save £1,969 GBP (77%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,553 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown emerald diamond

This 1ct lab-grown emerald sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG400943064 or 400943064. Listed at 9 retailers as of October 29, 2026, with prices from £584 to £2,553, a £1,969 spread on the same certified stone. MOH London lists it at £2,553. 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

1.00
Carat
J
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle22.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG400943064
Dimensions6.45 × 4.80 × 3.22 mm
L/W Ratio1.34
Culet sizeLong
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.45 mm4.80 mm1.00 ctJ / SI2
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG400943064
Side View
Table 62.5%Crown 22.2°Girdle: Slightly ThickPavilion 40.1°Culet: LNGDepth 67.1%

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 29
Current: £2,553 GBP|Low: £560 GBP|High: £2,574 GBP|Avg: £1,219 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 18, 2026
Retailer 3£584 GBP
Retailer 7£654 GBP
Retailer 4£678 GBP
Retailer 6£678 GBP
Retailer 8£1,047 GBP
Retailer 5£1,094 GBP
Retailer 9£1,516 GBP
Retailer 2£1,611 GBP
MOH London£2,553 GBP

14 data points across 9 retailers

9 retailers£584 GBP to £2,553 GBP

A
Cheapest Retailer
-
£584 GBP
$783 USD
B+
Retailer 2
-
£636 GBP
$852 USD
View
B+
Retailer 3
-
£654 GBP
$876 USD
View
Final sale: no returns
B+
Retailer 4
-
£678 GBP
$908 USD
View
Retailer 5
-
£678 GBP
$908 USD
View
Price last confirmed 18 days ago
B
Retailer 6
-
£1,094 GBP
$1,466 USD
View
B
Retailer 7
-
£1,611 GBP
$2,159 USD
View
B
Retailer 8
-
£1,905 GBP
$2,553 USD
View
Most Expensive
C
MOH London
LG400943064 · Oct 29
£2,553 GBP
View
8 more retailers have this diamond
Prices start from £584 GBPSave up to £1,969 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
1.00ct Emerald
£584 GBP