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Emerald|Lab Grown|IGI

1.01ct J SI1 Emerald Lab Grown Diamond

ID • J/SI1 • IGI LG407988459

Shape and cutting style on the report: Emerald cut

Certificate IGI LG407988459

Diamond specifications and retailer prices

From £522 GBP
$700 USD
As of October 29, 2026
Save £1,698 GBP (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,693 GBP at MOH London · As of October 21, 2026
View at MOH London

About this 1.01ct lab-grown emerald diamond

This 1.01ct 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 LG407988459 or 407988459. Listed at 11 retailers as of October 28, 2026, with a 325% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.01
Carat
J
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle23.9°
Pavilion angle42.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407988459
Dimensions6.98 × 4.75 × 3.16 mm
L/W Ratio1.47
Culet sizeLong
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.98 mm4.75 mm1.01 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407988459
Side View
Table 64.0%Crown 23.9°Girdle: MediumPavilion 42.8°Culet: LNGDepth 66.5%

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: £2,693 GBP|Low: £522 GBP|High: £2,714 GBP|Avg: £1,262 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 18, 2026
Retailer 7£522 GBP
Retailer 6£681 GBP
Retailer 12£740 GBP
Retailer 13£762 GBP
Retailer 8£790 GBP
Retailer 11£790 GBP
Retailer 3£922 GBP
Retailer 4£1,154 GBP
Retailer 9£1,267 GBP
Retailer 2£1,757 GBP
Retailer 10£2,220 GBP
Retailer 5£2,262 GBP
MOH London£2,693 GBP

17 data points across 13 retailers

11 retailers£522 GBP to £2,220 GBP

A
Cheapest Retailer
-
£522 GBP
$700 USD
B+
Retailer 2
-
£681 GBP
$912 USD
View
B+
Retailer 3
-
£740 GBP
$992 USD
View
B+
Retailer 4
-
£762 GBP
$1,021 USD
View
Final sale: no returns
B+
Retailer 5
-
£790 GBP
$1,058 USD
View
Retailer 6
-
£790 GBP
$1,058 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
£922 GBP
$1,235 USD
View
B
Retailer 8
-
£1,267 GBP
$1,697 USD
View
B
Retailer 9
-
£1,757 GBP
$2,354 USD
View
C
Retailer 10
-
£2,220 GBP
$2,975 USD
View
Most Expensive
MOH London
LG407988459 · Oct 21
£2,693 GBP
View
Price last confirmed 9 days ago
10 more retailers have this diamond
Prices start from £522 GBPSave up to £1,698 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
1.01ct Emerald
£522 GBP