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Marquise|Lab Grown|IGI

1.09ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG792663045

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG792663045

Diamond specifications and retailer prices

From €138 EUR
As of November 4, 2026
Save €583 EUR (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €721 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 1.09ct lab-grown marquise diamond

This 1.09ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG792663045 or 792663045. Listed at 18 retailers as of November 4, 2026, with prices from €138 to €721, a €583 spread on the same certified stone. MOH London lists it at €721. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.09
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792663045
Dimensions10.27 × 5.50 × 3.38 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.27 mm5.50 mm1.09 ctE / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG792663045
Side View
Table 63.0%Crown 35.8°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: €721 EUR|Low: €123 EUR|High: €855 EUR|Avg: €349 EUR|-4.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 9€125 EUR
Retailer 7€138 EUR
Retailer 5€144 EUR
Retailer 4€155 EUR
Retailer 2€199 EUR
Retailer 10€261 EUR
Retailer 14€267 EUR
Retailer 3€289 EUR
Retailer 11€293 EUR
Retailer 15€298 EUR
Retailer 6€376 EUR
Retailer 12€394 EUR
Retailer 8€427 EUR
Retailer 16€477 EUR
Retailer 17€497 EUR
Retailer 13€579 EUR
MOH London€721 EUR

42 data points across 17 retailers

18 retailers€138 EUR to €721 EUR

Retailer 1
-
€125 EUR
Price last confirmed 14 days ago
A
Retailer 2
-
€138 EUR
View
Final sale: no returns
Retailer 3
-
€144 EUR
View
Price last confirmed 13 days ago
Retailer 4
-
€155 EUR
View
Price last confirmed 12 days ago
A
Retailer 5
-
€182 EUR
View
A
Retailer 6
-
€199 EUR
View
A
Retailer 7
-
€261 EUR
View
Retailer 8
-
€267 EUR
View
Price last confirmed 8 days ago
B+
Retailer 9
-
€289 EUR
View
A
Retailer 10
-
€293 EUR
View
B+
Retailer 11
-
€298 EUR
View
Retailer 12
-
€376 EUR
View
Price last confirmed 11 days ago
B+
Retailer 13
-
€394 EUR
View
B+
Retailer 14
-
€427 EUR
View
Retailer 15
-
€477 EUR
View
Price last confirmed 9 days ago
Retailer 16
-
€497 EUR
View
Price last confirmed 12 days ago
B
Retailer 17
-
€579 EUR
View
Most Expensive
B
MOH London
LG792663045 · Nov 4
€721 EUR
£637 GBP
View
17 more retailers have this diamond
Prices start from €138 EURSave up to €583 EUR

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
1.09ct Marquise
€138 EUR