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Round|Lab Grown|IGI

1.09ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG436073891

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436073891

Diamond specifications and retailer prices

From €436 EUR
As of November 5, 2026
Save €1,813 EUR (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €2,248 EUR at MOH London · As of November 5, 2026
View at MOH London

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436073891 or 436073891. Listed at 13 retailers as of November 5, 2026, with prices from €436 to €2,248, a €1,813 spread on the same certified stone. MOH London lists it at €2,248. 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
J
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436073891
Dimensions6.67 × 6.64 × 4.04 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.67 mm6.64 mm1.09 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436073891
Side View
Table 56.5%Crown 33°GirdlePavilion 40.5°Culet: NoneDepth 60.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: €2,248 EUR|Low: €348 EUR|High: €2,281 EUR|Avg: €842 EUR|-0.3%
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
November 6, 2026
Retailer 10€436 EUR
Retailer 3€487 EUR
Retailer 14€487 EUR
Retailer 5€502 EUR
Retailer 11€540 EUR
Retailer 13€540 EUR
Retailer 7€552 EUR
Retailer 2€579 EUR
Retailer 9€664 EUR
Retailer 12€841 EUR
Retailer 6€922 EUR
Retailer 4€1,420 EUR
Retailer 8€1,451 EUR
MOH London€2,248 EUR

40 data points across 14 retailers

13 retailers€436 EUR to €2,248 EUR

A
Cheapest Retailer
-
€436 EUR
A
Retailer 2
-
€487 EUR
View
A
Retailer 3
-
€487 EUR
View
Final sale: no returns
A
Retailer 4
-
€502 EUR
View
Retailer 5
-
€540 EUR
View
Price last confirmed 21 days ago
A
Retailer 6
-
€540 EUR
View
A
Retailer 7
-
€552 EUR
View
A
Retailer 8
-
€579 EUR
View
A
Retailer 9
-
€664 EUR
View
B+
Retailer 10
-
€841 EUR
View
B
Retailer 11
-
€1,420 EUR
View
B
Retailer 12
-
€1,451 EUR
View
Most Expensive
B
MOH London
LG436073891 · Nov 5
€2,248 EUR
£1,987 GBP
View
12 more retailers have this diamond
Prices start from €436 EURSave up to €1,813 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 Round
€436 EUR