CaratHunter
Plans
Heart|Lab Grown|IGI

1.51ct G VS1 Heart Lab Grown Diamond

EX • G/VS1 • IGI LG754567521

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG754567521

Diamond specifications and retailer prices

From £202 GBP
As of November 4, 2026
Save £762 GBP (79%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,005 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG754567521 or 754567521. Listed at 18 retailers as of November 4, 2026, with a 377% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754567521
Dimensions7.22 × 7.71 × 4.48 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.22 mm7.71 mm1.51 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754567521
Side View
Table 62.0%Crown 34.9°Girdle: MED-THKPavilion 38.7°Culet: NoneDepth 58.1%

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: £1,005 GBP|Low: £191 GBP|High: £1,010 GBP|Avg: £522 GBP|+0.8%
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
Retailer 17
November 5, 2026
Retailer 5£198 GBP
Retailer 7£222 GBP
Retailer 6£247 GBP
Retailer 15£250 GBP
Retailer 17£338 GBP
Retailer 14£368 GBP
Retailer 16£371 GBP
Retailer 13£404 GBP
Retailer 12£432 GBP
Retailer 2£433 GBP
Retailer 8£497 GBP
Retailer 10£587 GBP
Retailer 11£645 GBP
Retailer 3£843 GBP
Retailer 4£964 GBP
Retailer 9£1,003 GBP
MOH London£1,005 GBP

35 data points across 17 retailers

18 retailers£202 GBP to £964 GBP

Retailer 1
-
£198 GBP
Price last confirmed 28 days ago
A
Retailer 2
-
£202 GBP
View
Retailer 3
-
£230 GBP
View
Price last confirmed 37 days ago
Retailer 4
-
£247 GBP
View
Price last confirmed 33 days ago
Retailer 5
-
£250 GBP
View
Price last confirmed 11 days ago
A
Retailer 6
-
£338 GBP
View
A
Retailer 7
-
£368 GBP
View
A
Retailer 8
-
£371 GBP
View
B+
Retailer 9
-
£404 GBP
View
B+
Retailer 10
-
£432 GBP
View
A
Retailer 11
-
£433 GBP
View
B+
Retailer 12
-
£587 GBP
View
B+
Retailer 13
-
£645 GBP
View
Retailer 14
-
£792 GBP
View
Price last confirmed 36 days ago
Retailer 15
-
£795 GBP
View
Price last confirmed 26 days ago
B
Retailer 16
-
£843 GBP
View
B
Retailer 17
-
£964 GBP
View
Most Expensive
MOH London
LG754567521 · Oct 26
£1,005 GBP
View
Price last confirmed 9 days ago
17 more retailers have this diamond
Prices start from £202 GBPSave up to £762 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 Heart
£202 GBP