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Heart|Lab Grown|IGI

1.31ct F VVS1 Heart Lab Grown Diamond

EX • F/VVS1 • IGI LG1215709

Certificate IGI LG1215709

Diamond specifications and retailer prices

From £368 GBP
As of November 6, 2026
Save £13 GBP (3%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £380 GBP at Adiamor · As of November 6, 2026
View at Adiamor

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 VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG1215709 or 1215709. Listed at 2 retailers as of November 6, 2026, with a relatively tight 3% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
F
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG1215709
Dimensions6.83 × 7.59 × 4.35 mm
L/W Ratio1.11
Top View
6.83 mm7.59 mm1.31 ctF / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG1215709
Side View
Table 61.0%CrownGirdle: STK-UNDPavilionCulet: NoneDepth 57.3%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: £380 GBP|Low: £241 GBP|High: £604 GBP|Avg: £353 GBP|-37.1%
Adiamor
Retailer 2
Retailer 3
September 23, 2026
Retailer 3£245 GBP
Retailer 2£368 GBP
Adiamor£380 GBP

74 data points across 3 retailers

2 retailers£368 GBP to £380 GBP

B+
Cheapest Retailer
-
£368 GBP
Most Expensive
B+
Adiamor
D-73198368 · Nov 6
£380 GBP
$509 USD
View
1 more retailer has this diamond
Prices start from £368 GBPSave up to £13 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+
1.31ct Heart
£368 GBP