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Marquise|Lab Grown|IGI

1.28ct D VS1 Marquise Lab Grown Diamond

EX • D/VS1 • IGI LG851606835

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG851606835

Diamond specifications and retailer prices

From £190 GBP
As of November 4, 2026
Save £624 GBP (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £815 GBP at MOH London · As of November 2, 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 D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG851606835 or 851606835. Listed at 13 retailers as of November 2, 2026, with prices from £190 to £815, a £624 spread on the same certified stone. MOH London lists it at £815. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851606835
Dimensions11.50 × 5.78 × 3.42 mm
L/W Ratio1.99
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.50 mm5.78 mm1.28 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851606835
Side View
Table 59.0%Crown 32.7°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 59.2%

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: £815 GBP|Low: £190 GBP|High: £819 GBP|Avg: £513 GBP|-0.6%
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
November 4, 2026
Retailer 7£190 GBP
Retailer 3£227 GBP
Retailer 2£270 GBP
Retailer 11£347 GBP
Retailer 13£394 GBP
Retailer 6£496 GBP
Retailer 5£556 GBP
Retailer 10£578 GBP
Retailer 8£653 GBP
Retailer 9£656 GBP
Retailer 4£659 GBP
Retailer 12£700 GBP
MOH London£815 GBP

8 data points across 13 retailers

13 retailers£190 GBP to £815 GBP

A
Cheapest Retailer
-
£190 GBP
A
Retailer 2
-
£227 GBP
View
A
Retailer 3
-
£270 GBP
View
A
Retailer 4
-
£347 GBP
View
A
Retailer 5
-
£394 GBP
View
B+
Retailer 6
-
£496 GBP
View
Retailer 7
-
£556 GBP
View
Price last confirmed 7 days ago
B+
Retailer 8
-
£578 GBP
View
B
Retailer 9
-
£653 GBP
View
B
Retailer 10
-
£656 GBP
View
B
Retailer 11
-
£659 GBP
View
B
Retailer 12
-
£700 GBP
View
Most Expensive
B
MOH London
LG851606835 · Nov 2
£815 GBP
View
12 more retailers have this diamond
Prices start from £190 GBPSave up to £624 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
£190 GBP