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Marquise|Lab Grown|IGI

1.90ct G VS2 Marquise Lab Grown Diamond

EX • G/VS2 • IGI LG831643400

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG831643400

Diamond specifications and retailer prices

From £316 GBP
$423 USD
As of October 26, 2026
Save £529 GBP (63%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £845 GBP at Brilliance · As of October 26, 2026
View at Brilliance

About this 1.9ct lab-grown marquise diamond

This 1.9ct lab-grown marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG831643400 or 831643400. Listed at 2 retailers as of October 26, 2026, with prices from £316 to £845, a £529 spread on the same certified stone. Brilliance lists it at £845. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.90
Carat
G
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831643400
Dimensions12.86 × 6.35 × 4.05 mm
L/W Ratio2.03
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.86 mm6.35 mm1.90 ctG / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831643400
Side View
Table 60.0%Crown 37.7°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 63.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 26
Current: £845 GBP|Low: £214 GBP|High: £845 GBP|Avg: £488 GBP|+2.4%
Brilliance
Retailer 2
Retailer 3
October 26, 2026
Retailer 3£214 GBP
Retailer 2£316 GBP
Brilliance£845 GBP

5 data points across 3 retailers

2 retailers£316 GBP to £845 GBP

B+
Cheapest Retailer
-
£316 GBP
$423 USD
Most Expensive
B+
Brilliance
D45804457 · Oct 26
£845 GBP
$1,132 USD
View
1 more retailer has this diamond
Prices start from £316 GBPSave up to £529 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+
1.90ct Marquise
£316 GBP