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Cushion|Lab Grown|IGI

1.23ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG833665783

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

Certificate IGI LG833665783

Diamond specifications and retailer prices

From $316 CAD
As of November 6, 2026
Save $1,260 CAD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,576 CAD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.23ct lab-grown cushion diamond

This 1.23ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG833665783 or 833665783. Listed at 11 retailers as of November 6, 2026, with prices from $316 to $1,576, a $1,260 spread on the same certified stone. Reve Diamonds lists it at $1,576. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
E
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG833665783
Dimensions6.26 × 6.17 × 4.15 mm
L/W Ratio1.01
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
6.26 mm6.17 mm1.23 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG833665783
Side View
Table 61.0%Crown 35.5°Girdle: MED-THKPavilion 39.9°Culet: NoneDepth 67.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $519 CAD|Low: $297 CAD|High: $1,576 CAD|Avg: $818 CAD|+4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Reve Diamonds
November 6, 2026
Retailer 2$298 CAD
Retailer 8$316 CAD
Retailer 1$519 CAD
Retailer 3$546 CAD
Retailer 9$550 CAD
Retailer 7$578 CAD
Retailer 6$802 CAD
Retailer 5$1,069 CAD
Retailer 10$1,069 CAD
Retailer 4$1,439 CAD
Reve Diamonds$1,576 CAD

45 data points across 11 retailers

11 retailers$316 CAD to $1,576 CAD

Retailer 1
-
$298 CAD
Price last confirmed 12 days ago
A
Retailer 2
-
$316 CAD
View
Final sale: no returns
A
Retailer 3
-
$519 CAD
View
A
Retailer 4
-
$546 CAD
View
B+
Retailer 5
-
$550 CAD
View
B+
Retailer 6
-
$578 CAD
View
B+
Retailer 7
-
$802 CAD
View
B
Retailer 8
-
$1,069 CAD
View
B
Retailer 9
-
$1,069 CAD
View
B
Retailer 10
-
$1,439 CAD
View
Most Expensive
B
Reve Diamonds
B8323DEFA · Nov 6
$1,576 CAD
$1,121 USD
View
10 more retailers have this diamond
Prices start from $316 CADSave up to $1,260 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
1.23ct Cushion
$316 CAD