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Emerald|Lab Grown|IGI

1.54ct F VS1 Emerald Lab Grown Diamond

EX • F/VS1 • IGI LG821617203

Shape and cutting style on the report: Emerald cut

Certificate IGI LG821617203

Diamond specifications and retailer prices

From £158 GBP
As of November 4, 2026
Save £639 GBP (80%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,326 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.54ct lab-grown emerald diamond

This 1.54ct lab-grown emerald sits in the one-and-a-half to two carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG821617203 or 821617203. Listed at 20 retailers as of November 4, 2026, with a 405% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821617203
Dimensions7.94 × 5.29 × 3.69 mm
L/W Ratio1.50
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.94 mm5.29 mm1.54 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821617203
Side View
Table 63.0%Crown 36.4°Girdle: MediumPavilion 40.2°Culet: LargeDepth 69.8%

Caratlytics Score

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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: £1,326 GBP|Low: £156 GBP|High: £1,393 GBP|Avg: £538 GBP|-4.8%
Brilliant Earth
Retailer 2
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Retailer 20
November 5, 2026
Retailer 20£158 GBP
Retailer 11£174 GBP
Retailer 6£181 GBP
Retailer 9£193 GBP
Retailer 16£196 GBP
Retailer 5£334 GBP
Retailer 19£336 GBP
Retailer 7£343 GBP
Retailer 14£359 GBP
Retailer 2£390 GBP
Retailer 10£439 GBP
Retailer 4£451 GBP
Retailer 8£624 GBP
Retailer 3£629 GBP
Retailer 17£637 GBP
Retailer 18£667 GBP
Retailer 15£781 GBP
Retailer 13£796 GBP
Retailer 12£909 GBP
Brilliant Earth£1,326 GBP

30 data points across 20 retailers

20 retailers£158 GBP to £796 GBP

A
Cheapest Retailer
-
£158 GBP
A
Retailer 2
-
£181 GBP
View
Retailer 3
-
£193 GBP
View
Price last confirmed 24 days ago
Retailer 4
-
£193 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£196 GBP
View
A
Retailer 6
-
£334 GBP
View
B+
Retailer 7
-
£336 GBP
View
Retailer 8
-
£343 GBP
View
Price last confirmed 7 days ago
A
Retailer 9
-
£359 GBP
View
A
Retailer 10
-
£390 GBP
View
B+
Retailer 11
-
£439 GBP
View
A
Retailer 12
-
£451 GBP
View
B
Retailer 13
-
£624 GBP
View
B+
Retailer 14
-
£629 GBP
View
B+
Retailer 15
-
£637 GBP
View
B+
Retailer 16
-
£667 GBP
View
B
Retailer 17
-
£781 GBP
View
B
Retailer 18
-
£796 GBP
View
Retailer 19
-
£909 GBP
View
Price last confirmed 25 days ago
Most Expensive
Brilliant Earth
20748971A · Oct 28
£1,326 GBP
$1,790 USD
View
Price last confirmed 7 days ago
19 more retailers have this diamond
Prices start from £158 GBPSave up to £639 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
1.54ct Emerald
£158 GBP