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Emerald|Lab Grown|IGI

1.28ct F VS1 Emerald Lab Grown Diamond

ID • F/VS1 • IGI LG555272628

Shape and cutting style on the report: Emerald cut

Certificate IGI LG555272628

Diamond specifications and retailer prices

From £173 GBP
As of November 4, 2026
Save £683 GBP (80%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,261 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.28ct lab-grown emerald diamond

This 1.28ct lab-grown emerald sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG555272628 or 555272628. Listed at 17 retailers as of November 4, 2026, with a 396% 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

1.28
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.3°
Pavilion angle42°
OriginLab Grown
Grading LabIGI
CertificateIGI LG555272628
Dimensions7.73 × 5.12 × 3.29 mm
L/W Ratio1.51
Culet sizeLarge
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
7.73 mm5.12 mm1.28 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG555272628
Side View
Table 63.5%Crown 31.3°Girdle: MediumPavilion 42°Culet: LargeDepth 64.3%

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: £400 GBP|Low: £166 GBP|High: £868 GBP|Avg: £408 GBP|+2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 5, 2026
Retailer 12£173 GBP
Retailer 6£193 GBP
Retailer 11£200 GBP
Retailer 2£214 GBP
Retailer 14£214 GBP
Retailer 4£361 GBP
Retailer 8£370 GBP
Retailer 1£400 GBP
Retailer 5£450 GBP
Retailer 10£522 GBP
Retailer 9£593 GBP
Retailer 13£688 GBP
Retailer 3£691 GBP
Retailer 7£856 GBP

46 data points across 14 retailers

17 retailers£173 GBP to £856 GBP

A
Cheapest Retailer
-
£173 GBP
A
Retailer 2
-
£193 GBP
View
Final sale: no returns
A
Retailer 3
-
£200 GBP
View
A
Retailer 4
-
£214 GBP
View
Retailer 5
-
£214 GBP
View
Price last confirmed 11 days ago
B+
Retailer 6
-
£361 GBP
View
B+
Retailer 7
-
£366 GBP
View
A
Retailer 8
-
£370 GBP
View
B+
Retailer 9
-
£400 GBP
View
B+
Retailer 10
-
£450 GBP
View
Retailer 11
-
£522 GBP
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£593 GBP
View
B
Retailer 13
-
£688 GBP
View
B
Retailer 14
-
£691 GBP
View
B
Retailer 15
-
£727 GBP
View
B
Retailer 16
-
£856 GBP
View
Most Expensive
Queensmith
LG555272628 · Oct 27
£1,261 GBP
View
Price last confirmed 8 days ago
16 more retailers have this diamond
Prices start from £173 GBPSave up to £683 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
1.28ct Emerald
£173 GBP