Emerald|Lab Grown|IGI

1.51ct H I1 Emerald Lab Grown Diamond

ID • H/I1 • IGI LG620480918

Shape and cutting style on the report: Emerald cut

Certificate IGI LG620480918

Diamond specifications and retailer prices

From £251 GBP
$336 USD
As of October 30, 2026
Save £1,001 GBP (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,252 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct lab-grown emerald diamond

This 1.51ct lab-grown emerald sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI LG620480918 or 620480918. Listed at 10 retailers as of October 29, 2026, with prices from £251 to £1,252, a £1,001 spread on the same certified stone. MOH London lists it at £1,252. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
H
Colour
I1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620480918
Dimensions7.70 × 5.54 × 3.59 mm
L/W Ratio1.39
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
7.70 mm5.54 mm1.51 ctH / I1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620480918
Side View
Table 62.0%Crown 37.1°Girdle: MED-STKPavilion 39.3°Culet: LNGDepth 64.8%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £1,252 GBP|Low: £240 GBP|High: £1,260 GBP|Avg: £582 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 4£251 GBP
Retailer 5£310 GBP
Retailer 6£310 GBP
Retailer 8£344 GBP
Retailer 7£502 GBP
Retailer 3£502 GBP
Retailer 9£651 GBP
Retailer 2£911 GBP
MOH London£1,252 GBP

14 data points across 9 retailers

10 retailers£251 GBP to £1,252 GBP

B+
Cheapest Retailer
-
£251 GBP
$336 USD
B+
Retailer 2
-
£290 GBP
$389 USD
View
B+
Retailer 3
-
£310 GBP
$416 USD
View
B+
Retailer 4
-
£310 GBP
$416 USD
View
B+
Retailer 5
-
£344 GBP
HK$3,600 HKD
View
B+
Retailer 6
-
£502 GBP
$672 USD
View
B+
Retailer 7
-
£502 GBP
$673 USD
View
B
Retailer 8
-
£911 GBP
$1,221 USD
View
B
Retailer 9
-
£999 GBP
$1,338 USD
View
Most Expensive
B
MOH London
LG620480918 · Oct 29
£1,252 GBP
View
9 more retailers have this diamond
Prices start from £251 GBPSave up to £1,001 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+
1.51ct Emerald
£251 GBP