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Emerald|Lab Grown|IGI

1.01ct J SI1 Emerald Lab Grown Diamond

VG • J/SI1 • IGI LG407998493

Shape and cutting style on the report: Emerald cut

Certificate IGI LG407998493

Diamond specifications and retailer prices

From £440 GBP
$590 USD
As of October 30, 2026
Save £1,780 GBP (80%) 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 very-good cut grade and certified by IGI LG407998493 or 407998493. Listed at 11 retailers as of October 28, 2026, with a 404% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.01
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle25°
Pavilion angle47.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407998493
Dimensions6.66 × 4.77 × 3.36 mm
L/W Ratio1.40
Culet sizeLong
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.66 mm4.77 mm1.01 ctJ / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407998493
Side View
Table 66.5%Crown 25°Girdle: Slightly ThickPavilion 47.8°Culet: LNGDepth 70.4%

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: £2,693 GBP|Low: £440 GBP|High: £2,714 GBP|Avg: £1,246 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 30, 2026
Retailer 2£440 GBP
Retailer 7£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 6£1,757 GBP
Retailer 10£2,220 GBP
Retailer 5£2,262 GBP
MOH London£2,693 GBP

18 data points across 13 retailers

11 retailers£440 GBP to £2,220 GBP

A
Cheapest Retailer
-
£440 GBP
$590 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
C
Retailer 9
-
£1,757 GBP
$2,354 USD
View
C
Retailer 10
-
£2,220 GBP
$2,975 USD
View
Most Expensive
MOH London
LG407998493 · Oct 21
£2,693 GBP
View
Price last confirmed 9 days ago
10 more retailers have this diamond
Prices start from £440 GBPSave up to £1,780 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
£440 GBP