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Cushion|Lab Grown|IGI

1.00ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG830650343

Shape and cutting style on the report: Cushion antique cut

Certificate IGI LG830650343

Diamond specifications and retailer prices

From $259 CAD
As of November 6, 2026
Save $1,350 CAD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,609 CAD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1ct lab-grown cushion diamond

This 1ct 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 LG830650343 or 830650343. Listed at 16 retailers as of November 6, 2026, with prices from $259 to $1,609, a $1,350 spread on the same certified stone. Reve Diamonds lists it at $1,609. 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

1.00
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.9°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830650343
Dimensions7.52 × 5.25 × 3.21 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.52 mm5.25 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830650343
Side View
Table 62.0%Crown 37.9°Girdle: MED-STKPavilion 40°Culet: LargeDepth 61.1%

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: Nov 6
Current: $527 CAD|Low: $249 CAD|High: $1,609 CAD|Avg: $708 CAD|+1.9%
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
November 6, 2026
Retailer 9$259 CAD
Retailer 5$290 CAD
Retailer 4$301 CAD
Retailer 2$322 CAD
Retailer 11$322 CAD
Retailer 1$527 CAD
Retailer 3$565 CAD
Retailer 6$574 CAD
Retailer 13$710 CAD
Retailer 10$1,034 CAD
Retailer 8$1,092 CAD
Retailer 12$1,108 CAD
Retailer 7$1,505 CAD
Reve Diamonds$1,609 CAD

44 data points across 14 retailers

16 retailers$259 CAD to $1,609 CAD

A
Cheapest Retailer
-
$259 CAD
A
Retailer 2
-
$290 CAD
View
Final sale: no returns
A
Retailer 3
-
$301 CAD
View
A
Retailer 4
-
$322 CAD
View
Retailer 5
-
$322 CAD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$422 CAD
View
A
Retailer 7
-
$527 CAD
View
B+
Retailer 8
-
$565 CAD
View
B+
Retailer 9
-
$574 CAD
View
B+
Retailer 10
-
$710 CAD
View
B
Retailer 11
-
$872 CAD
View
B
Retailer 12
-
$1,034 CAD
View
B
Retailer 13
-
$1,092 CAD
View
B
Retailer 14
-
$1,108 CAD
View
Retailer 15
-
$1,505 CAD
View
Price last confirmed 12 days ago
Most Expensive
B
Reve Diamonds
0D8A5DAB5 · Nov 6
$1,609 CAD
$1,144 USD
View
15 more retailers have this diamond
Prices start from $259 CADSave up to $1,350 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
1.00ct Cushion
$259 CAD