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Heart|Lab Grown|IGI

0.31ct F VS1 Heart Lab Grown Diamond

ID • F/VS1 • IGI LG799666142

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG799666142

Diamond specifications and retailer prices

From £175 GBP
As of November 2, 2026
Save £161 GBP (48%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £667 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.31ct lab-grown heart diamond

This 0.31ct lab-grown heart sits in the sub-half-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG799666142 or 799666142. Listed at 6 retailers as of October 31, 2026, with a 92% 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

0.31
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.3°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799666142
Dimensions4.88 × 4.58 × 2.50 mm
L/W Ratio1.07
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
4.88 mm4.58 mm0.31 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG799666142
Side View
Table 62.0%Crown 34.3°Girdle: MED-STKPavilion 37.1°CuletDepth 51.2%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: £667 GBP|Low: £163 GBP|High: £675 GBP|Avg: £310 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 2£175 GBP
Retailer 4£187 GBP
Retailer 3£233 GBP
Retailer 5£313 GBP
MOH London£667 GBP

41 data points across 5 retailers

6 retailers£175 GBP to £336 GBP

B+
Cheapest Retailer
-
£175 GBP
B
Retailer 2
-
£187 GBP
$251 USD
View
B
Retailer 3
-
£233 GBP
View
B
Retailer 4
-
£313 GBP
$420 USD
View
B
Retailer 5
-
£336 GBP
$450 USD
View
Most Expensive
MOH London
LG799666142 · Nov 1
£667 GBP
View
Price under review
5 more retailers have this diamond
Prices start from £175 GBPSave up to £161 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+
0.31ct Heart
£175 GBP