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Heart|Lab Grown|IGI

0.42ct H VS1 Heart Lab Grown Diamond

EX • H/VS1 • IGI LG847619145

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG847619145

Diamond specifications and retailer prices

From £86 GBP
HK$900 HKD
As of November 1, 2026
Save £433 GBP (83%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £519 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 0.42ct lab-grown heart diamond

This 0.42ct lab-grown heart sits in the sub-half-carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG847619145 or 847619145. Listed at 7 retailers as of October 26, 2026, with prices from £86 to £519, a £433 spread on the same certified stone. MOH London lists it at £519. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.42
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.1°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847619145
Dimensions4.85 × 5.25 × 2.87 mm
L/W Ratio1.08
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
4.85 mm5.25 mm0.42 ctH / VS1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG847619145
Side View
Table 70.0%Crown 34.1°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 54.7%

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 1
Current: £519 GBP|Low: £86 GBP|High: £519 GBP|Avg: £222 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 6£86 GBP
Retailer 2£138 GBP
Retailer 4£157 GBP
Retailer 3£193 GBP
Retailer 5£243 GBP
Retailer 7£272 GBP
MOH London£519 GBP

5 data points across 7 retailers

7 retailers£86 GBP to £519 GBP

A
Cheapest Retailer
-
£86 GBP
HK$900 HKD
B+
Retailer 2
-
£138 GBP
€176 EUR
View
Retailer 3
-
£157 GBP
$211 USD
View
Price last confirmed 7 days ago
B+
Retailer 4
-
£193 GBP
View
B
Retailer 5
-
£243 GBP
$325 USD
View
B
Retailer 6
-
£272 GBP
$364 USD
View
Most Expensive
B
MOH London
LG847619145 · Oct 26
£519 GBP
View
6 more retailers have this diamond
Prices start from £86 GBPSave up to £433 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
0.42ct Heart
£86 GBP