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Emerald|Lab Grown|IGI

1.00ct J SI1 Emerald Lab Grown Diamond

ID • J/SI1 • IGI LG407997023

Shape and cutting style on the report: Emerald cut

Certificate IGI LG407997023

Diamond specifications and retailer prices

From £518 GBP
$690 USD
As of October 29, 2026
Save £2,165 GBP (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,683 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG407997023 or 407997023. Listed at 11 retailers as of October 29, 2026, with prices from £518 to £2,683, a £2,165 spread on the same certified stone. MOH London lists it at £2,683. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle17.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407997023
Dimensions6.40 × 4.88 × 3.37 mm
L/W Ratio1.31
Culet sizeLong
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.40 mm4.88 mm1.00 ctJ / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407997023
Side View
Table 56.0%Crown 17.9°Girdle: MED-STKPavilion 41°Culet: LNGDepth 69.1%

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: £2,683 GBP|Low: £518 GBP|High: £2,701 GBP|Avg: £1,252 GBP|+0.5%
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
October 29, 2026
Retailer 7£518 GBP
Retailer 6£678 GBP
Retailer 12£738 GBP
Retailer 13£759 GBP
Retailer 8£787 GBP
Retailer 11£787 GBP
Retailer 3£920 GBP
Retailer 4£1,151 GBP
Retailer 9£1,263 GBP
Retailer 2£1,750 GBP
Retailer 10£2,212 GBP
Retailer 5£2,254 GBP
MOH London£2,683 GBP

18 data points across 13 retailers

11 retailers£518 GBP to £2,683 GBP

A
Cheapest Retailer
-
£518 GBP
$690 USD
B+
Retailer 2
-
£678 GBP
$903 USD
View
B+
Retailer 3
-
£738 GBP
$983 USD
View
B+
Retailer 4
-
£759 GBP
$1,011 USD
View
Final sale: no returns
B+
Retailer 5
-
£787 GBP
$1,048 USD
View
Retailer 6
-
£787 GBP
$1,048 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
£920 GBP
$1,225 USD
View
B
Retailer 8
-
£1,263 GBP
$1,682 USD
View
B
Retailer 9
-
£1,750 GBP
$2,331 USD
View
C
Retailer 10
-
£2,212 GBP
$2,946 USD
View
Most Expensive
B
MOH London
LG407997023 · Oct 29
£2,683 GBP
View
10 more retailers have this diamond
Prices start from £518 GBPSave up to £2,165 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
£518 GBP