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Round|Lab Grown|IGI

1.51ct H VVS2 Round Lab Grown Diamond

EX • H/VVS2 • IGI LG818689120

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818689120

Diamond specifications and retailer prices

From £150 GBP
As of November 3, 2026
Save £720 GBP (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £870 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG818689120 or 818689120. Listed at 19 retailers as of November 2, 2026, with prices from £150 to £870, a £720 spread on the same certified stone. MOH London lists it at £870. 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
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818689120
Dimensions7.48 × 7.45 × 4.42 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.48 mm7.45 mm1.51 ctH / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818689120
Side View
Table 62.0%Crown 33.6°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 59.2%

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 3
Current: £870 GBP|Low: £144 GBP|High: £881 GBP|Avg: £415 GBP
MOH London
Retailer 2
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Retailer 12
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Retailer 18
November 3, 2026
Retailer 17£150 GBP
Retailer 5£174 GBP
Retailer 7£186 GBP
Retailer 18£186 GBP
Retailer 11£289 GBP
Retailer 2£315 GBP
Retailer 14£321 GBP
Retailer 3£323 GBP
Retailer 8£341 GBP
Retailer 4£433 GBP
Retailer 13£433 GBP
Retailer 12£486 GBP
Retailer 16£585 GBP
Retailer 6£598 GBP
Retailer 10£607 GBP
Retailer 9£638 GBP
Retailer 15£664 GBP
MOH London£870 GBP

43 data points across 18 retailers

19 retailers£150 GBP to £870 GBP

A
Cheapest Retailer
-
£150 GBP
A
Retailer 2
-
£174 GBP
View
Retailer 3
-
£186 GBP
View
Price last confirmed 10 days ago
A
Retailer 4
-
£186 GBP
View
A
Retailer 5
-
£289 GBP
View
A
Retailer 6
-
£315 GBP
View
A
Retailer 7
-
£321 GBP
View
B+
Retailer 8
-
£323 GBP
View
A
Retailer 9
-
£341 GBP
View
B+
Retailer 10
-
£433 GBP
View
A
Retailer 11
-
£433 GBP
View
B+
Retailer 12
-
£486 GBP
View
Retailer 13
-
£585 GBP
View
Price last confirmed 14 days ago
B
Retailer 14
-
£598 GBP
View
B
Retailer 15
-
£600 GBP
View
B
Retailer 16
-
£607 GBP
View
B
Retailer 17
-
£638 GBP
View
B
Retailer 18
-
£664 GBP
View
Most Expensive
B
MOH London
LG818689120 · Nov 2
£870 GBP
View
18 more retailers have this diamond
Prices start from £150 GBPSave up to £720 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 Round
£150 GBP