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Emerald|Lab Grown|IGI

1.28ct F VS1 Emerald Lab Grown Diamond

VG • F/VS1 • IGI LG843661173

Shape and cutting style on the report: Emerald cut

Certificate IGI LG843661173

Diamond specifications and retailer prices

From £139 GBP
As of November 4, 2026
Save £682 GBP (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £820 GBP at MOH London · As of November 2, 2026
View at MOH London

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 very-good cut grade and certified by IGI LG843661173 or 843661173. Listed at 12 retailers as of November 2, 2026, with prices from £139 to £820, a £682 spread on the same certified stone. MOH London lists it at £820. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
F
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.7°
Pavilion angle42.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843661173
Dimensions7.53 × 5.05 × 3.46 mm
L/W Ratio1.49
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.53 mm5.05 mm1.28 ctF / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843661173
Side View
Table 64.0%Crown 38.7°Girdle: MediumPavilion 42.3°Culet: LargeDepth 68.5%

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: £820 GBP|Low: £139 GBP|High: £820 GBP|Avg: £406 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 9£139 GBP
Retailer 11£164 GBP
Retailer 5£172 GBP
Retailer 8£302 GBP
Retailer 4£309 GBP
Retailer 2£354 GBP
Retailer 3£427 GBP
Retailer 10£553 GBP
Retailer 7£555 GBP
Retailer 6£593 GBP
MOH London£820 GBP

6 data points across 11 retailers

12 retailers£139 GBP to £820 GBP

A
Cheapest Retailer
-
£139 GBP
A
Retailer 2
-
£164 GBP
View
A
Retailer 3
-
£172 GBP
View
A
Retailer 4
-
£302 GBP
View
A
Retailer 5
-
£309 GBP
View
B+
Retailer 6
-
£354 GBP
View
B+
Retailer 7
-
£427 GBP
View
B+
Retailer 8
-
£467 GBP
View
B
Retailer 9
-
£553 GBP
View
B
Retailer 10
-
£555 GBP
View
B
Retailer 11
-
£593 GBP
View
Most Expensive
B
MOH London
LG843661173 · Nov 2
£820 GBP
View
11 more retailers have this diamond
Prices start from £139 GBPSave up to £682 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
£139 GBP