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Marquise|Lab Grown|IGI

1.28ct F VS1 Marquise Lab Grown Diamond

EX • F/VS1 • IGI LG769673857

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG769673857

Diamond specifications and retailer prices

From £161 GBP
As of November 6, 2026
Save £637 GBP (80%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £798 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.28ct lab-grown marquise diamond

This 1.28ct lab-grown marquise 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 LG769673857 or 769673857. Listed at 21 retailers as of November 5, 2026, with prices from £161 to £798, a £637 spread on the same certified stone. MOH London lists it at £798. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG769673857
Dimensions11.49 × 5.72 × 3.47 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.49 mm5.72 mm1.28 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG769673857
Side View
Table 59.0%Crown 33.7°Girdle: THN-MEDPavilion 40.4°Culet: NoneDepth 60.7%

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 6
Current: £798 GBP|Low: £155 GBP|High: £809 GBP|Avg: £418 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 16
November 6, 2026
Retailer 15£161 GBP
Retailer 7£187 GBP
Retailer 3£199 GBP
Retailer 6£199 GBP
Retailer 4£240 GBP
Retailer 9£329 GBP
Retailer 2£338 GBP
Retailer 10£366 GBP
Retailer 16£416 GBP
Retailer 12£488 GBP
Retailer 8£512 GBP
Retailer 13£524 GBP
Retailer 14£545 GBP
Retailer 5£642 GBP
Retailer 11£747 GBP
MOH London£798 GBP

35 data points across 16 retailers

21 retailers£161 GBP to £798 GBP

A
Cheapest Retailer
-
£161 GBP
A
Retailer 2
-
£187 GBP
View
A
Retailer 3
-
£199 GBP
View
Retailer 4
-
£199 GBP
View
Price last confirmed 13 days ago
B+
Retailer 5
-
£269 GBP
View
A
Retailer 6
-
£329 GBP
View
A
Retailer 7
-
£338 GBP
View
A
Retailer 8
-
£365 GBP
View
A
Retailer 9
-
£366 GBP
View
B+
Retailer 10
-
£416 GBP
View
B+
Retailer 11
-
£439 GBP
View
B+
Retailer 12
-
£488 GBP
View
B+
Retailer 13
-
£512 GBP
View
B+
Retailer 14
-
£524 GBP
View
Retailer 15
-
£545 GBP
View
Price last confirmed 11 days ago
B
Retailer 16
-
£642 GBP
View
B
Retailer 17
-
£681 GBP
View
B
Retailer 18
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£684 GBP
View
B
Retailer 19
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£747 GBP
View
B
Retailer 20
-
£774 GBP
View
Most Expensive
B
MOH London
LG769673857 · Nov 5
£798 GBP
View
20 more retailers have this diamond
Prices start from £161 GBPSave up to £637 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 Marquise
£161 GBP