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Oval|Lab Grown|IGI

1.51ct H VS1 Oval Lab Grown Diamond

EX • H/VS1 • IGI LG818663908

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG818663908

Diamond specifications and retailer prices

From £172 GBP
As of November 3, 2026
Save £680 GBP (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £851 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown oval diamond

This 1.51ct lab-grown oval sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818663908 or 818663908. Listed at 16 retailers as of November 3, 2026, with prices from £172 to £851, a £680 spread on the same certified stone. MOH London lists it at £851. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818663908
Dimensions9.15 × 6.61 × 4.05 mm
L/W Ratio1.38
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.15 mm6.61 mm1.51 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818663908
Side View
Table 62.0%Crown 34.9°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.3%

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 3
Current: £851 GBP|Low: £164 GBP|High: £856 GBP|Avg: £492 GBP|+0.6%
MOH London
Retailer 2
Retailer 3
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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 5, 2026
Retailer 5£172 GBP
Retailer 3£192 GBP
Retailer 6£199 GBP
Retailer 13£213 GBP
Retailer 14£213 GBP
Retailer 12£361 GBP
Retailer 10£367 GBP
Retailer 8£370 GBP
Retailer 2£498 GBP
Retailer 9£571 GBP
Retailer 15£685 GBP
Retailer 4£689 GBP
Retailer 7£689 GBP
Retailer 16£724 GBP
Retailer 11£822 GBP
MOH London£851 GBP

34 data points across 16 retailers

16 retailers£172 GBP to £851 GBP

A
Cheapest Retailer
-
£172 GBP
A
Retailer 2
-
£192 GBP
View
Final sale: no returns
A
Retailer 3
-
£199 GBP
View
Retailer 4
-
£213 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£213 GBP
View
A
Retailer 6
-
£361 GBP
View
A
Retailer 7
-
£367 GBP
View
A
Retailer 8
-
£370 GBP
View
B+
Retailer 9
-
£498 GBP
View
B+
Retailer 10
-
£571 GBP
View
B+
Retailer 11
-
£685 GBP
View
Retailer 12
-
£689 GBP
View
Price last confirmed 15 days ago
B+
Retailer 13
-
£689 GBP
View
B
Retailer 14
-
£724 GBP
View
B
Retailer 15
-
£822 GBP
View
Most Expensive
B
MOH London
LG818663908 · Nov 5
£851 GBP
View
15 more retailers have this diamond
Prices start from £172 GBPSave up to £680 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
1.51ct Oval
£172 GBP