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Cushion|Lab Grown|IGI

1.80ct I SI1 Cushion Lab Grown Diamond

ID • I/SI1 • IGI LG436045240

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG436045240

Diamond specifications and retailer prices

From $621 CAD
$442 USD
As of October 28, 2026
Save $2,091 CAD (77%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,712 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 1.8ct lab-grown cushion diamond

This 1.8ct 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 LG436045240 or 436045240. Listed at 9 retailers as of October 28, 2026, with prices from $621 to $2,712, a $2,091 spread on the same certified stone. MOH London lists it at $2,712. 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

1.80
Carat
I
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436045240
Dimensions7.06 × 7.00 × 4.66 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.06 mm7.00 mm1.80 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436045240
Side View
Table 63.5%Crown 35.1°Girdle: STK-VTKPavilion 40.7°Culet: NoneDepth 66.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $2,712 CAD|Low: $608 CAD|High: $2,729 CAD|Avg: $1,211 CAD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 8$621 CAD
Retailer 5$690 CAD
Retailer 6$789 CAD
Retailer 3$794 CAD
Retailer 2$927 CAD
Retailer 7$1,048 CAD
Retailer 4$1,094 CAD
Retailer 9$2,270 CAD
MOH London$2,712 CAD

36 data points across 9 retailers

9 retailers$621 CAD to $2,712 CAD

A
Cheapest Retailer
-
$621 CAD
$442 USD
Final sale: no returns
A
Retailer 2
-
$690 CAD
$491 USD
View
A
Retailer 3
-
$789 CAD
$562 USD
View
A
Retailer 4
-
$794 CAD
$565 USD
View
A
Retailer 5
-
$927 CAD
£520 GBP
View
A
Retailer 6
-
$1,048 CAD
$746 USD
View
B+
Retailer 7
-
$1,094 CAD
$779 USD
View
B+
Retailer 8
-
$2,270 CAD
$1,616 USD
View
Most Expensive
B
MOH London
LG436045240 · Oct 29
$2,712 CAD
£1,520 GBP
View
8 more retailers have this diamond
Prices start from $621 CADSave up to $2,091 CAD

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
1.80ct Cushion
$621 CAD