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Marquise|Lab Grown|IGI

0.51ct I VS1 Marquise Lab Grown Diamond

ID • I/VS1 • IGI LG436047200

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436047200

Diamond specifications and retailer prices

From £226 GBP
As of November 4, 2026
Save £895 GBP (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,120 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 0.51ct lab-grown marquise diamond

This 0.51ct lab-grown marquise sits in the half to three-quarter carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG436047200 or 436047200. Listed at 13 retailers as of November 4, 2026, with prices from £226 to £1,120, a £895 spread on the same certified stone. MOH London lists it at £1,120. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
I
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436047200
Dimensions7.80 × 4.28 × 2.72 mm
L/W Ratio1.82
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.80 mm4.28 mm0.51 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436047200
Side View
Table 57.0%Crown 32.9°Girdle: MED-THKPavilion 40.5°Culet: NoneDepth 63.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £1,120 GBP|Low: £217 GBP|High: £1,136 GBP|Avg: £573 GBP|-0.3%
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
Retailer 14
Retailer 15
Retailer 16
November 5, 2026
Retailer 11£226 GBP
Retailer 4£253 GBP
Retailer 16£262 GBP
Retailer 12£267 GBP
Retailer 3£280 GBP
Retailer 13£280 GBP
Retailer 5£396 GBP
Retailer 15£457 GBP
Retailer 9£508 GBP
Retailer 2£513 GBP
Retailer 6£551 GBP
Retailer 10£861 GBP
Retailer 14£901 GBP
Retailer 7£1,095 GBP
MOH London£1,120 GBP
Retailer 8£1,126 GBP

28 data points across 16 retailers

13 retailers£226 GBP to £1,120 GBP

A
Cheapest Retailer
-
£226 GBP
A
Retailer 2
-
£253 GBP
View
Final sale: no returns
A
Retailer 3
-
£262 GBP
View
B+
Retailer 4
-
£267 GBP
View
Retailer 5
-
£280 GBP
View
Price last confirmed 11 days ago
B+
Retailer 6
-
£280 GBP
View
B
Retailer 7
-
£457 GBP
View
B
Retailer 8
-
£508 GBP
View
B
Retailer 9
-
£513 GBP
View
B
Retailer 10
-
£861 GBP
View
B
Retailer 11
-
£901 GBP
View
B
Retailer 12
-
£1,095 GBP
View
Most Expensive
B
MOH London
LG436047200 · Nov 5
£1,120 GBP
View
12 more retailers have this diamond
Prices start from £226 GBPSave up to £895 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
0.51ct Marquise
£226 GBP