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Marquise|Lab Grown|IGI

1.40ct G VVS1 Marquise Lab Grown Diamond

ID • G/VVS1 • IGI LG797685407

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG797685407

Diamond specifications and retailer prices

From £355 GBP
As of November 5, 2026
Save £470 GBP (57%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £825 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.4ct lab-grown marquise diamond

This 1.4ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG797685407 or 797685407. Listed at 2 retailers as of November 4, 2026, with prices from £355 to £825, a £470 spread on the same certified stone. Brilliant Earth lists it at £825. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.40
Carat
G
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG797685407
Dimensions11.14 × 5.93 × 3.73 mm
L/W Ratio1.88
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.14 mm5.93 mm1.40 ctG / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG797685407
Side View
Table 60.0%Crown 35.6°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £825 GBP|Low: £296 GBP|High: £866 GBP|Avg: £521 GBP|-2.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 6£296 GBP
Retailer 3£304 GBP
Retailer 2£355 GBP
Retailer 7£361 GBP
Retailer 4£536 GBP
Retailer 5£621 GBP
Brilliant Earth£825 GBP
Retailer 8£866 GBP

39 data points across 8 retailers

2 retailers£355 GBP to £825 GBP

A
Cheapest Retailer
-
£355 GBP
Most Expensive
B
Brilliant Earth
19402259A · Nov 4
£825 GBP
$1,110 USD
View
1 more retailer has this diamond
Prices start from £355 GBPSave up to £470 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
1.40ct Marquise
£355 GBP