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Cushion|Lab Grown|IGI

1.81ct I SI1 Cushion Lab Grown Diamond

ID • I/SI1 • IGI LG436045044

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG436045044

Diamond specifications and retailer prices

From €945 EUR
$1,060 USD
As of November 2, 2026
Save €3,657 EUR (79%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €4,602 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 1.81ct lab-grown cushion diamond

This 1.81ct lab-grown cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436045044 or 436045044. Listed at 6 retailers as of November 1, 2026, with prices from €945 to €4,602, a €3,657 spread on the same certified stone. MOH London lists it at €4,602. 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

1.81
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436045044
Dimensions7.47 × 7.14 × 4.42 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.47 mm7.14 mm1.81 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436045044
Side View
Table 64.0%Crown 34.1°Girdle: MED-THKPavilion 37.6°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €4,602 EUR|Low: €945 EUR|High: €4,663 EUR|Avg: €2,464 EUR|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 2€945 EUR
Retailer 5€1,555 EUR
Retailer 3€1,611 EUR
Retailer 6€1,761 EUR
Retailer 9€1,782 EUR
Retailer 7€2,181 EUR
Retailer 4€2,536 EUR
MOH London€4,602 EUR
Retailer 8€4,613 EUR

14 data points across 9 retailers

6 retailers€945 EUR to €4,602 EUR

B+
Cheapest Retailer
-
€945 EUR
$1,060 USD
B
Retailer 2
-
€1,555 EUR
$1,744 USD
View
Final sale: no returns
Retailer 3
-
€1,611 EUR
$1,807 USD
View
Price last confirmed 21 days ago
B
Retailer 4
-
€1,761 EUR
$1,975 USD
View
B
Retailer 5
-
€2,536 EUR
$2,844 USD
View
Most Expensive
B
MOH London
LG436045044 · Nov 1
€4,602 EUR
£4,064 GBP
View
5 more retailers have this diamond
Prices start from €945 EURSave up to €3,657 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.

B+
1.81ct Cushion
€945 EUR