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Cushion|Lab Grown|IGI

1.59ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG455010380

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

Certificate IGI LG455010380

Diamond specifications and retailer prices

From $561 CAD
$401 USD
As of October 27, 2026
Save $2,784 CAD (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $3,345 CAD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.59ct lab-grown cushion diamond

This 1.59ct 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 LG455010380 or 455010380. Listed at 9 retailers as of October 27, 2026, with prices from $561 to $3,345, a $2,784 spread on the same certified stone. Do Amore Diamonds lists it at $3,345. 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

1.59
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG455010380
Dimensions6.76 × 6.74 × 4.60 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa.
Top View
6.76 mm6.74 mm1.59 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG455010380
Side View
Table 60.0%Crown 35.3°Girdle: STK-VTKPavilion 40.8°Culet: NoneDepth 68.2%

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 27
Current: $3,345 CAD|Low: $561 CAD|High: $3,345 CAD|Avg: $1,373 CAD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 4$561 CAD
Retailer 5$774 CAD
Retailer 2$911 CAD
Retailer 7$1,245 CAD
Retailer 8$1,674 CAD
Retailer 6$1,887 CAD
Retailer 3$2,076 CAD
Do Amore Diamonds$3,345 CAD

34 data points across 8 retailers

9 retailers$561 CAD to $3,345 CAD

A
Cheapest Retailer
-
$561 CAD
$401 USD
A
Retailer 2
-
$686 CAD
$490 USD
View
B+
Retailer 3
-
$774 CAD
$553 USD
View
B+
Retailer 4
-
$911 CAD
£512 GBP
View
B+
Retailer 5
-
$1,245 CAD
$889 USD
View
B
Retailer 6
-
$1,674 CAD
$1,196 USD
View
B
Retailer 7
-
$1,887 CAD
$1,348 USD
View
B
Retailer 8
-
$2,076 CAD
£1,168 GBP
View
Most Expensive
B
Do Amore Diamonds
27-363F4265B · Oct 29
$3,345 CAD
$2,390 USD
View
8 more retailers have this diamond
Prices start from $561 CADSave up to $2,784 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
1.59ct Cushion
$561 CAD