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Marquise|Lab Grown|IGI

1.09ct G SI1 Marquise Lab Grown Diamond

G/SI1 • IGI LG646490374

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG646490374

Diamond specifications and retailer prices

From €451 EUR
£398 GBP
As of November 2, 2026
1 retailer carries this diamond
Only listing: €451 EUR at MD Diamonds and Jewellers
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at MD Diamonds and Jewellers

About this 1.09ct lab-grown marquise diamond

This 1.09ct lab-grown marquise sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included) and certified by IGI LG646490374 or 646490374. Listed at a single retailer as of November 2, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.09
Carat
G
Color
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG646490374
Dimensions10.99 × 5.26 × 3.31 mm
L/W Ratio2.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.99 mm5.26 mm1.09 ctG / SI1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG646490374
Side View
Table 58.0%Crown 37.5°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: €451 EUR|Low: €451 EUR|High: €451 EUR|Avg: €451 EUR
December 30, 2025
MD Diamonds and Jewellers€451 EUR

3 data points across 1 retailer

1 retailer

B
MD Diamonds and Jewellers
LG646490374 · Nov 2
€451 EUR
£398 GBP
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B
1.09ct Marquise
€451 EUR