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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 €949 EUR
$1,060 USD
As of October 31, 2026
Save €3,671 EUR (79%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €4,620 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 October 31, 2026, with prices from €949 to €4,620, a €3,671 spread on the same certified stone. MOH London lists it at €4,620. 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
Color
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

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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: Oct 31
Current: €4,620 EUR|Low: €949 EUR|High: €4,681 EUR|Avg: €2,466 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€949 EUR
Retailer 5€1,561 EUR
Retailer 3€1,617 EUR
Retailer 6€1,768 EUR
Retailer 9€1,789 EUR
Retailer 7€2,189 EUR
Retailer 4€2,546 EUR
MOH London€4,620 EUR
Retailer 8€4,631 EUR

15 data points across 9 retailers

6 retailers€949 EUR to €4,620 EUR

B+
Cheapest Retailer
-
€949 EUR
$1,060 USD
B
Retailer 2
-
€1,561 EUR
$1,744 USD
View
Final sale: no returns
Retailer 3
-
€1,617 EUR
$1,807 USD
View
Price last confirmed 20 days ago
B
Retailer 4
-
€1,768 EUR
$1,975 USD
View
B
Retailer 5
-
€2,546 EUR
$2,844 USD
View
Most Expensive
B
MOH London
LG436045044 · Nov 1
€4,620 EUR
£4,064 GBP
View
5 more retailers have this diamond
Prices start from €949 EURSave up to €3,671 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
€949 EUR