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Cushion|Lab Grown|IGI

1.55ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG591369468

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG591369468

Diamond specifications and retailer prices

From $276 CAD
$197 USD
As of October 28, 2026
Save $2,090 CAD (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,365 CAD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.55ct lab-grown cushion diamond

This 1.55ct 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 LG591369468 or 591369468. Listed at 14 retailers as of October 28, 2026, with prices from $276 to $2,365, a $2,090 spread on the same certified stone. Do Amore Diamonds lists it at $2,365. 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

1.55
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591369468
Dimensions7.37 × 6.35 × 4.35 mm
L/W Ratio1.16
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
7.37 mm6.35 mm1.55 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591369468
Side View
Table 63.0%Crown 36.5°Girdle: THN-STKPavilion 39.4°Culet: NoneDepth 68.5%

Caratlytics Score

How it works →
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: $613 CAD|Low: $276 CAD|High: $2,547 CAD|Avg: $1,036 CAD|+4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 7$276 CAD
Retailer 9$411 CAD
Retailer 2$556 CAD
Retailer 1$613 CAD
Retailer 8$777 CAD
Retailer 5$1,265 CAD
Retailer 3$1,584 CAD
Retailer 6$1,805 CAD
Retailer 4$1,931 CAD

41 data points across 9 retailers

14 retailers$276 CAD to $2,365 CAD

A
Cheapest Retailer
-
$276 CAD
$197 USD
Final sale: no returns
B+
Retailer 2
-
$411 CAD
$294 USD
View
A
Retailer 3
-
$509 CAD
$364 USD
View
A
Retailer 4
-
$556 CAD
€378 EUR
View
A
Retailer 5
-
$613 CAD
£345 GBP
View
B+
Retailer 6
-
$777 CAD
$555 USD
View
B+
Retailer 7
-
$1,153 CAD
$823 USD
View
B+
Retailer 8
-
$1,265 CAD
$904 USD
View
B
Retailer 9
-
$1,584 CAD
£891 GBP
View
B
Retailer 10
-
$1,777 CAD
$1,270 USD
View
B
Retailer 11
-
$1,777 CAD
$1,270 USD
View
B
Retailer 12
-
$1,805 CAD
$1,290 USD
View
B
Retailer 13
-
$1,931 CAD
$1,380 USD
View
Most Expensive
B
Do Amore Diamonds
27-7C1DA9D49 · Oct 29
$2,365 CAD
$1,690 USD
View
13 more retailers have this diamond
Prices start from $276 CADSave up to $2,090 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
1.55ct Cushion
$276 CAD