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Heart|Lab Grown|IGI

1.51ct G VS1 Heart Lab Grown Diamond

GD • G/VS1 • IGI LG818679709

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818679709

Diamond specifications and retailer prices

From £360 GBP
As of November 5, 2026
Save £489 GBP (58%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £849 GBP at MOH London · As of November 5, 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 standard cut grade and certified by IGI LG818679709 or 818679709. Listed at 5 retailers as of November 5, 2026, with prices from £360 to £849, a £489 spread on the same certified stone. MOH London lists it at £849. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
G
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle43.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818679709
Dimensions6.64 × 7.65 × 5.03 mm
L/W Ratio1.15
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.64 mm7.65 mm1.51 ctG / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818679709
Side View
Table 57.0%Crown 35.6°Girdle: ThickPavilion 43.4°Culet: NoneDepth 65.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £849 GBP|Low: £343 GBP|High: £862 GBP|Avg: £537 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 4£360 GBP
Retailer 3£361 GBP
Retailer 2£396 GBP
Retailer 5£721 GBP
MOH London£849 GBP

35 data points across 5 retailers

5 retailers£360 GBP to £849 GBP

B+
Cheapest Retailer
-
£360 GBP
B+
Retailer 2
-
£361 GBP
View
B+
Retailer 3
-
£396 GBP
View
B
Retailer 4
-
£721 GBP
View
Most Expensive
B
MOH London
LG818679709 · Nov 5
£849 GBP
View
4 more retailers have this diamond
Prices start from £360 GBPSave up to £489 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.

B+
1.51ct Heart
£360 GBP