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Cushion|Lab Grown|IGI

2.59ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG737580697

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG737580697

Diamond specifications and retailer prices

From $455 CAD
$325 USD
As of October 28, 2026
Save $2,974 CAD (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,429 CAD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 2.59ct lab-grown cushion diamond

This 2.59ct lab-grown cushion sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG737580697 or 737580697. Listed at 13 retailers as of October 28, 2026, with prices from $455 to $3,429, a $2,974 spread on the same certified stone. Brilliant Earth lists it at $3,429. 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

2.59
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG737580697
Dimensions8.98 × 7.33 × 4.84 mm
L/W Ratio1.23
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.98 mm7.33 mm2.59 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG737580697
Side View
Table 57.0%Crown 33.8°Girdle: STK-VTKPavilion 35.2°Culet: NoneDepth 66.0%

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: $3,429 CAD|Low: $455 CAD|High: $4,045 CAD|Avg: $1,401 CAD|-15.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 29, 2026
Retailer 11$455 CAD
Retailer 9$634 CAD
Retailer 10$679 CAD
Retailer 14$679 CAD
Retailer 5$686 CAD
Retailer 7$816 CAD
Retailer 2$888 CAD
Retailer 12$928 CAD
Retailer 3$1,162 CAD
Retailer 4$1,686 CAD
Retailer 8$2,028 CAD
Retailer 13$2,072 CAD
Retailer 6$2,477 CAD
Brilliant Earth$3,429 CAD

41 data points across 14 retailers

13 retailers$455 CAD to $3,429 CAD

A
Cheapest Retailer
-
$455 CAD
$325 USD
Final sale: no returns
A
Retailer 2
-
$634 CAD
£357 GBP
View
A
Retailer 3
-
$679 CAD
$485 USD
View
B+
Retailer 4
-
$679 CAD
$485 USD
View
A
Retailer 5
-
$816 CAD
€555 EUR
View
A
Retailer 6
-
$888 CAD
£499 GBP
View
A
Retailer 7
-
$928 CAD
$663 USD
View
B+
Retailer 8
-
$1,162 CAD
$830 USD
View
B+
Retailer 9
-
$1,686 CAD
$1,205 USD
View
B+
Retailer 10
-
$2,028 CAD
£1,141 GBP
View
B
Retailer 11
-
$2,072 CAD
$1,481 USD
View
B
Retailer 12
-
$2,477 CAD
$1,770 USD
View
Price last confirmed 29 days ago
Most Expensive
B
Brilliant Earth
18587734A · Oct 28
$3,429 CAD
$2,450 USD
View
12 more retailers have this diamond
Prices start from $455 CADSave up to $2,974 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
2.59ct Cushion
$455 CAD