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Heart|Lab Grown|IGI

1.31ct F VS1 Heart Lab Grown Diamond

F/VS1 • IGI LG594338174

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG594338174

Diamond specifications and retailer prices

From £192 GBP
As of November 4, 2026
Save £719 GBP (79%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £912 GBP at Michael Trio · As of November 4, 2026
View at Michael Trio

About this 1.31ct lab-grown heart diamond

This 1.31ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included) and certified by IGI LG594338174 or 594338174. Listed at 6 retailers as of November 4, 2026, with prices from £192 to £912, a £719 spread on the same certified stone. Michael Trio lists it at £912. 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

1.31
Carat
F
Colour
VS1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG594338174
Dimensions6.64 × 7.46 × 4.54 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.64 mm7.46 mm1.31 ctF / VS1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG594338174
Side View
Table 61.0%Crown 39.8°Girdle: THN-STKPavilion 40.2°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £912 GBP|Low: £192 GBP|High: £912 GBP|Avg: £460 GBP
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 4£192 GBP
Retailer 5£303 GBP
Retailer 6£314 GBP
Retailer 2£462 GBP
Retailer 3£574 GBP
Michael Trio£912 GBP

10 data points across 6 retailers

6 retailers£192 GBP to £912 GBP

A
Cheapest Retailer
-
£192 GBP
Final sale: no returns
B+
Retailer 2
-
£303 GBP
View
B+
Retailer 3
-
£314 GBP
View
B
Retailer 4
-
£462 GBP
View
Retailer 5
-
£574 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Michael Trio
2115247079 · Nov 4
£912 GBP
SGD 1,658 SGD
View
5 more retailers have this diamond
Prices start from £192 GBPSave up to £719 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
1.31ct Heart
£192 GBP