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Emerald|Lab Grown|IGI

1.40ct H SI1 Emerald Lab Grown Diamond

ID • H/SI1 • IGI LG506195917

Shape and cutting style on the report: Emerald cut

Certificate IGI LG506195917

Diamond specifications and retailer prices

From £586 GBP
As of November 6, 2026
Save £1,961 GBP (77%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,548 GBP at MOH London · As of November 3, 2026
View at MOH London

About this 1.4ct lab-grown emerald diamond

This 1.4ct lab-grown emerald sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG506195917 or 506195917. Listed at 11 retailers as of November 3, 2026, with prices from £586 to £2,548, a £1,961 spread on the same certified stone. MOH London lists it at £2,548. 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

1.40
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.8°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG506195917
Dimensions8.01 × 5.25 × 3.29 mm
L/W Ratio1.53
Culet sizeLong
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.01 mm5.25 mm1.40 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG506195917
Side View
Table 69.5%Crown 27.8°Girdle: MED-STKPavilion 38.2°Culet: LNGDepth 62.7%

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: Nov 6
Current: £2,548 GBP|Low: £562 GBP|High: £2,579 GBP|Avg: £1,166 GBP
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
November 1, 2026
Retailer 8£586 GBP
Retailer 2£617 GBP
Retailer 13£637 GBP
Retailer 3£655 GBP
Retailer 9£680 GBP
Retailer 12£680 GBP
Retailer 6£810 GBP
Retailer 4£1,061 GBP
Retailer 10£1,097 GBP
Retailer 7£1,617 GBP
Retailer 11£1,911 GBP
Retailer 5£1,947 GBP
MOH London£2,548 GBP

22 data points across 13 retailers

11 retailers£586 GBP to £2,548 GBP

B+
Cheapest Retailer
-
£586 GBP
B+
Retailer 2
-
£617 GBP
View
B+
Retailer 3
-
£637 GBP
View
B+
Retailer 4
-
£655 GBP
View
Final sale: no returns
Retailer 5
-
£680 GBP
View
Price last confirmed 25 days ago
B+
Retailer 6
-
£680 GBP
View
B
Retailer 7
-
£810 GBP
View
B
Retailer 8
-
£1,097 GBP
View
B
Retailer 9
-
£1,617 GBP
View
B
Retailer 10
-
£1,911 GBP
View
Most Expensive
B
MOH London
LG506195917 · Nov 3
£2,548 GBP
View
10 more retailers have this diamond
Prices start from £586 GBPSave up to £1,961 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+
1.40ct Emerald
£586 GBP