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Marquise|Lab Grown|IGI

1.69ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG818697011

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818697011

Diamond specifications and retailer prices

From £183 GBP
$245 USD
As of November 1, 2026
Save £734 GBP (80%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £917 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.69ct lab-grown marquise diamond

This 1.69ct lab-grown marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818697011 or 818697011. Listed at 3 retailers as of November 1, 2026, with prices from £183 to £917, a £734 spread on the same certified stone. Brilliant Earth lists it at £917. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.69
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818697011
Dimensions12.33 × 6.19 × 3.93 mm
L/W Ratio1.99
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.33 mm6.19 mm1.69 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818697011
Side View
Table 60.0%Crown 34.7°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £917 GBP|Low: £183 GBP|High: £1,431 GBP|Avg: £503 GBP|-35.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 3£183 GBP
Retailer 5£319 GBP
Retailer 4£330 GBP
Retailer 2£386 GBP
Brilliant Earth£917 GBP

37 data points across 5 retailers

3 retailers£183 GBP to £917 GBP

A
Cheapest Retailer
-
£183 GBP
$245 USD
Final sale: no returns
A
Retailer 2
-
£386 GBP
View
Most Expensive
B
Brilliant Earth
21228531A · Nov 2
£917 GBP
$1,230 USD
View
2 more retailers have this diamond
Prices start from £183 GBPSave up to £734 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
1.69ct Marquise
£183 GBP