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Cushion|Lab Grown|IGI

1.01ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG805634045

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

Certificate IGI LG805634045

Diamond specifications and retailer prices

From $278 CAD
$199 USD
As of October 25, 2026
Save $1,213 CAD (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,491 CAD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.01ct lab-grown cushion diamond

This 1.01ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG805634045 or 805634045. Listed at 15 retailers as of October 25, 2026, with prices from $278 to $1,491, a $1,213 spread on the same certified stone. Reve Diamonds lists it at $1,491. 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

1.01
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805634045
Dimensions5.81 × 5.79 × 3.92 mm
L/W Ratio1.00
Girdle conditionFaceted
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
5.81 mm5.79 mm1.01 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG805634045
Side View
Table 60.0%Crown 37.4°Girdle: STK-THKPavilion 39.9°Culet: NoneDepth 67.7%

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 25
Current: $684 CAD|Low: $244 CAD|High: $1,491 CAD|Avg: $651 CAD|-14.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Reve Diamonds
October 30, 2026
Retailer 13$278 CAD
Retailer 10$279 CAD
Retailer 6$362 CAD
Retailer 4$413 CAD
Retailer 8$478 CAD
Retailer 7$490 CAD
Retailer 2$501 CAD
Retailer 9$528 CAD
Retailer 1$684 CAD
Retailer 3$721 CAD
Retailer 12$736 CAD
Retailer 5$970 CAD
Retailer 11$1,302 CAD
Reve Diamonds$1,491 CAD

34 data points across 14 retailers

15 retailers$278 CAD to $1,491 CAD

A
Cheapest Retailer
-
$278 CAD
$199 USD
A
Retailer 2
-
$279 CAD
$200 USD
View
Final sale: no returns
A
Retailer 3
-
$362 CAD
£204 GBP
View
A
Retailer 4
-
$413 CAD
$296 USD
View
A
Retailer 5
-
$478 CAD
€326 EUR
View
A
Retailer 6
-
$490 CAD
£276 GBP
View
A
Retailer 7
-
$501 CAD
$359 USD
View
A
Retailer 8
-
$528 CAD
£298 GBP
View
B+
Retailer 9
-
$684 CAD
$490 USD
View
B+
Retailer 10
-
$721 CAD
$516 USD
View
Retailer 11
-
$732 CAD
$524 USD
View
Price last confirmed 109 days ago
B
Retailer 12
-
$736 CAD
$527 USD
View
B
Retailer 13
-
$970 CAD
$695 USD
View
B
Retailer 14
-
$1,302 CAD
£734 GBP
View
Most Expensive
B
Reve Diamonds
C4CC612A1 · Oct 30
$1,491 CAD
$1,067 USD
View
14 more retailers have this diamond
Prices start from $278 CADSave up to $1,213 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
1.01ct Cushion
$278 CAD