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Princess|Lab Grown|IGI

1.29ct F VVS1 Princess Lab Grown Diamond

EX • F/VVS1 • IGI LG850679438

Shape and cutting style on the report: Princess cut

Certificate IGI LG850679438

Diamond specifications and retailer prices

From £367 GBP
As of November 4, 2026
Save £380 GBP (51%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £747 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.29ct lab-grown princess diamond

This 1.29ct lab-grown princess 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 LG850679438 or 850679438. Listed at 2 retailers as of November 4, 2026, with prices from £367 to £747, a £380 spread on the same certified stone. Brilliant Earth lists it at £747. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
F
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG850679438
Dimensions5.93 × 5.82 × 4.26 mm
L/W Ratio1.02
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.93 mm5.82 mm1.29 ctF / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG850679438
Side View
Table 72.0%Crown 44°Girdle: MediumPavilion 39.4°Culet: NoneDepth 73.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £747 GBP|Low: £367 GBP|High: £747 GBP|Avg: £558 GBP
Brilliant Earth
Retailer 2
November 4, 2026
Retailer 2£367 GBP
Brilliant Earth£747 GBP

4 data points across 2 retailers

2 retailers£367 GBP to £747 GBP

A
Cheapest Retailer
-
£367 GBP
Most Expensive
B
Brilliant Earth
22429211A · Nov 4
£747 GBP
$1,000 USD
View
1 more retailer has this diamond
Prices start from £367 GBPSave up to £380 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
1.29ct Princess
£367 GBP