CaratHunter
Plans
Cushion|Lab Grown|IGI

1.31ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG694550465

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

Certificate IGI LG694550465

Diamond specifications and retailer prices

From $293 CAD
As of November 6, 2026
Save $1,241 CAD (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,533 CAD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.31ct lab-grown cushion diamond

This 1.31ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG694550465 or 694550465. Listed at 13 retailers as of November 6, 2026, with prices from $293 to $1,533, a $1,241 spread on the same certified stone. Brilliant Earth lists it at $1,533. 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

1.31
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG694550465
Dimensions6.44 × 6.23 × 4.20 mm
L/W Ratio1.03
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
6.44 mm6.23 mm1.31 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG694550465
Side View
Table 63.0%Crown 38.9°Girdle: MED-STKPavilion 38.8°Culet: NoneDepth 67.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,533 CAD|Low: $293 CAD|High: $1,632 CAD|Avg: $803 CAD|-2.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$293 CAD
Retailer 8$324 CAD
Retailer 11$436 CAD
Retailer 4$575 CAD
Retailer 2$594 CAD
Retailer 10$646 CAD
Retailer 7$795 CAD
Retailer 6$964 CAD
Retailer 3$1,114 CAD
Retailer 5$1,506 CAD
Brilliant Earth$1,533 CAD

43 data points across 11 retailers

13 retailers$293 CAD to $1,533 CAD

A
Cheapest Retailer
-
$293 CAD
Final sale: no returns
Retailer 2
-
$324 CAD
View
Price last confirmed 12 days ago
B+
Retailer 3
-
$436 CAD
View
A
Retailer 4
-
$575 CAD
View
A
Retailer 5
-
$594 CAD
View
A
Retailer 6
-
$646 CAD
View
B+
Retailer 7
-
$795 CAD
View
B+
Retailer 8
-
$956 CAD
View
Retailer 9
-
$962 CAD
View
Price last confirmed 89 days ago
B+
Retailer 10
-
$964 CAD
View
B
Retailer 11
-
$1,114 CAD
View
B
Retailer 12
-
$1,506 CAD
View
Most Expensive
B
Brilliant Earth
21312327A · Nov 6
$1,533 CAD
$1,090 USD
View
12 more retailers have this diamond
Prices start from $293 CADSave up to $1,241 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
1.31ct Cushion
$293 CAD