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Princess|Lab Grown|IGI

10.42ct F VS1 Princess Lab Grown Diamond

EX • F/VS1 • IGI LG831659420

Shape and cutting style on the report: Princess cut

Certificate IGI LG831659420

Diamond specifications and retailer prices

From £1,613 GBP
$2,161 USD
As of November 1, 2026
Save £9,299 GBP (85%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £10,911 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 10.42ct lab-grown princess diamond

This 10.42ct lab-grown princess sits in the over five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG831659420 or 831659420. Listed at 3 retailers as of October 31, 2026, with prices from £1,613 to £10,911, a £9,299 spread on the same certified stone. Brilliant Earth lists it at £10,911. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

10.42
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.4°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831659420
Dimensions12.28 × 12.04 × 8.09 mm
L/W Ratio1.02
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.28 mm12.04 mm10.42 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831659420
Side View
Table 71.0%Crown 43.4°Girdle: MediumPavilion 37.5°Culet: NoneDepth 67.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £10,911 GBP|Low: £1,613 GBP|High: £12,434 GBP|Avg: £5,531 GBP|-12.2%
Brilliant Earth
Retailer 2
Retailer 3
November 2, 2026
Retailer 3£1,613 GBP
Retailer 2£2,319 GBP
Brilliant Earth£10,911 GBP

38 data points across 3 retailers

3 retailers£1,613 GBP to £10,911 GBP

A
Cheapest Retailer
-
£1,613 GBP
$2,161 USD
Final sale: no returns
A
Retailer 2
-
£2,319 GBP
View
Most Expensive
B
Brilliant Earth
21232788A · Oct 31
£10,911 GBP
$14,620 USD
View
2 more retailers have this diamond
Prices start from £1,613 GBPSave up to £9,299 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
10.42ct Princess
£1,613 GBP