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Emerald|Lab Grown|IGI

1.56ct F IF Emerald Lab Grown Diamond

ID • F/IF • IGI LG780618079

Shape and cutting style on the report: Emerald cut

Certificate IGI LG780618079

Diamond specifications and retailer prices

From £170 GBP
As of November 4, 2026
Save £1,033 GBP (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,204 GBP at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 1.56ct lab-grown emerald diamond

This 1.56ct lab-grown emerald sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780618079 or 780618079. Listed at 18 retailers as of November 1, 2026, with prices from £170 to £1,204, a £1,033 spread on the same certified stone. Rare Carat lists it at £1,204. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.56
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780618079
Dimensions8.42 × 5.25 × 3.35 mm
L/W Ratio1.60
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.42 mm5.25 mm1.56 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780618079
Side View
Table 62.0%Crown 33.3°Girdle: MED-STKPavilion 38.3°Culet: LargeDepth 63.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £1,204 GBP|Low: £170 GBP|High: £1,222 GBP|Avg: £535 GBP|-1.5%
Rare Carat
Retailer 2
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Retailer 12
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Retailer 18
November 5, 2026
Retailer 13£170 GBP
Retailer 9£191 GBP
Retailer 15£198 GBP
Retailer 5£212 GBP
Retailer 12£212 GBP
Retailer 7£359 GBP
Retailer 17£365 GBP
Retailer 2£392 GBP
Retailer 6£456 GBP
Retailer 16£494 GBP
Retailer 14£680 GBP
Retailer 3£682 GBP
Retailer 4£719 GBP
Retailer 8£770 GBP
Retailer 11£845 GBP
Retailer 18£861 GBP
Retailer 10£942 GBP
Rare Carat£1,204 GBP

38 data points across 18 retailers

18 retailers£170 GBP to £1,204 GBP

A
Cheapest Retailer
-
£170 GBP
A
Retailer 2
-
£191 GBP
View
Final sale: no returns
A
Retailer 3
-
£198 GBP
View
Retailer 4
-
£212 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£212 GBP
View
A
Retailer 6
-
£359 GBP
View
A
Retailer 7
-
£365 GBP
View
A
Retailer 8
-
£392 GBP
View
A
Retailer 9
-
£456 GBP
View
A
Retailer 10
-
£494 GBP
View
A
Retailer 11
-
£680 GBP
View
B+
Retailer 12
-
£682 GBP
View
B+
Retailer 13
-
£719 GBP
View
B+
Retailer 14
-
£770 GBP
View
B+
Retailer 15
-
£845 GBP
View
B+
Retailer 16
-
£861 GBP
View
Retailer 17
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£942 GBP
View
Price last confirmed 31 days ago
Most Expensive
B
Rare Carat
C-291_l_780618079 · Nov 1
£1,204 GBP
$1,625 USD
View
17 more retailers have this diamond
Prices start from £170 GBPSave up to £1,033 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
1.56ct Emerald
£170 GBP