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Emerald|Lab Grown|IGI

1.01ct J SI1 Emerald Lab Grown Diamond

VG • J/SI1 • IGI LG400943045

Shape and cutting style on the report: Emerald cut

Certificate IGI LG400943045

Diamond specifications and retailer prices

From £443 GBP
$590 USD
As of October 30, 2026
Save £2,255 GBP (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,698 GBP at MOH London · As of October 25, 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 LG400943045 or 400943045. Listed at 11 retailers as of October 25, 2026, with prices from £443 to £2,698, a £2,255 spread on the same certified stone. MOH London lists it at £2,698. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle23.7°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG400943045
Dimensions6.89 × 4.54 × 3.19 mm
L/W Ratio1.52
Culet sizeLong
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.89 mm4.54 mm1.01 ctJ / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG400943045
Side View
Table 64.5%Crown 23.7°Girdle: Slightly ThickPavilion 40°Culet: LNGDepth 70.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,698 GBP|Low: £443 GBP|High: £2,728 GBP|Avg: £1,254 GBP|-0.9%
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£443 GBP
Retailer 7£685 GBP
Retailer 12£745 GBP
Retailer 13£767 GBP
Retailer 8£794 GBP
Retailer 11£794 GBP
Retailer 3£927 GBP
Retailer 4£1,161 GBP
Retailer 9£1,274 GBP
Retailer 6£1,768 GBP
Retailer 10£2,234 GBP
Retailer 5£2,275 GBP
MOH London£2,698 GBP

18 data points across 13 retailers

11 retailers£443 GBP to £2,698 GBP

B+
Cheapest Retailer
-
£443 GBP
$590 USD
B+
Retailer 2
-
£685 GBP
$912 USD
View
B+
Retailer 3
-
£745 GBP
$992 USD
View
B+
Retailer 4
-
£767 GBP
$1,021 USD
View
Final sale: no returns
B
Retailer 5
-
£794 GBP
$1,058 USD
View
Retailer 6
-
£794 GBP
$1,058 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
£927 GBP
$1,235 USD
View
B
Retailer 8
-
£1,274 GBP
$1,697 USD
View
C
Retailer 9
-
£1,768 GBP
$2,354 USD
View
C
Retailer 10
-
£2,234 GBP
$2,975 USD
View
Most Expensive
C
MOH London
LG400943045 · Oct 25
£2,698 GBP
View
10 more retailers have this diamond
Prices start from £443 GBPSave up to £2,255 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.

B+
1.01ct Emerald
£443 GBP