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Cushion|Lab Grown|IGI

1.80ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG587384143

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG587384143

Diamond specifications and retailer prices

From $388 CAD
$277 USD
As of October 28, 2026
Save $3,391 CAD (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,779 CAD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG587384143 or 587384143. Listed at 17 retailers as of October 28, 2026, with prices from $388 to $3,779, a $3,391 spread on the same certified stone. Do Amore Diamonds lists it at $3,779. 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
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG587384143
Dimensions7.22 × 6.92 × 4.64 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.22 mm6.92 mm1.80 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG587384143
Side View
Table 62.0%Crown 35°Girdle: MED-THKPavilion 38.7°Culet: NoneDepth 67.1%

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: Oct 28
Current: $3,779 CAD|Low: $388 CAD|High: $3,779 CAD|Avg: $1,287 CAD|+13.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 5$388 CAD
Retailer 9$526 CAD
Retailer 7$700 CAD
Retailer 10$700 CAD
Retailer 6$749 CAD
Retailer 11$770 CAD
Retailer 2$1,039 CAD
Retailer 4$1,393 CAD
Retailer 3$1,717 CAD
Retailer 12$2,094 CAD
Retailer 13$2,141 CAD
Retailer 8$2,334 CAD
Do Amore Diamonds$3,779 CAD

40 data points across 13 retailers

17 retailers$388 CAD to $3,779 CAD

A
Cheapest Retailer
-
$388 CAD
$277 USD
Final sale: no returns
A
Retailer 2
-
$526 CAD
$376 USD
View
A
Retailer 3
-
$607 CAD
£342 GBP
View
Price last confirmed 36 days ago
A
Retailer 4
-
$700 CAD
$500 USD
View
A
Retailer 5
-
$700 CAD
$500 USD
View
A
Retailer 6
-
$749 CAD
£421 GBP
View
A
Retailer 7
-
$770 CAD
$550 USD
View
B+
Retailer 8
-
$1,039 CAD
£584 GBP
View
B+
Retailer 9
-
$1,393 CAD
$995 USD
View
B
Retailer 10
-
$1,525 CAD
$1,089 USD
View
Price last confirmed 63 days ago
B
Retailer 11
-
$1,621 CAD
View
B
Retailer 12
-
$1,717 CAD
$1,227 USD
View
B
Retailer 13
-
$2,094 CAD
$1,496 USD
View
B
Retailer 14
-
$2,141 CAD
SGD 2,067 SGD
View
B
Retailer 15
-
$2,334 CAD
£1,313 GBP
View
B
Retailer 16
-
$3,261 CAD
$2,330 USD
View
Price last confirmed 28 days ago
Most Expensive
B
Do Amore Diamonds
27-70838E392 · Oct 29
$3,779 CAD
$2,700 USD
View
16 more retailers have this diamond
Prices start from $388 CADSave up to $3,391 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
$388 CAD