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Cushion|Lab Grown|IGI

1.21ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG840633344

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840633344

Diamond specifications and retailer prices

From $633 CAD
$453 USD
As of October 30, 2026
Save $2,622 CAD (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,255 CAD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.21ct lab-grown cushion diamond

This 1.21ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840633344 or 840633344. Listed at 16 retailers as of October 30, 2026, with prices from $633 to $3,255, a $2,622 spread on the same certified stone. Brilliant Earth lists it at $3,255. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840633344
Dimensions7.66 × 5.47 × 3.61 mm
L/W Ratio1.40
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
7.66 mm5.47 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840633344
Side View
Table 61.0%Crown 32.5°Girdle: MED-STKPavilion 37.5°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 30
Current: $3,255 CAD|Low: $633 CAD|High: $3,534 CAD|Avg: $1,709 CAD|-7.9%
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
Retailer 15
Retailer 16
October 30, 2026
Retailer 16$633 CAD
Retailer 14$682 CAD
Retailer 2$704 CAD
Retailer 4$1,004 CAD
Retailer 13$1,027 CAD
Retailer 5$1,083 CAD
Retailer 9$1,117 CAD
Retailer 15$1,144 CAD
Retailer 12$1,171 CAD
Retailer 10$1,192 CAD
Retailer 7$2,193 CAD
Retailer 3$2,241 CAD
Retailer 6$2,364 CAD
Retailer 11$2,677 CAD
Retailer 8$3,239 CAD
Brilliant Earth$3,255 CAD

23 data points across 16 retailers

16 retailers$633 CAD to $3,255 CAD

A
Cheapest Retailer
-
$633 CAD
$453 USD
Final sale: no returns
A
Retailer 2
-
$682 CAD
$488 USD
View
A
Retailer 3
-
$704 CAD
£397 GBP
View
A
Retailer 4
-
$1,004 CAD
$719 USD
View
A
Retailer 5
-
$1,027 CAD
$735 USD
View
A
Retailer 6
-
$1,083 CAD
$775 USD
View
A
Retailer 7
-
$1,117 CAD
£630 GBP
View
A
Retailer 8
-
$1,144 CAD
$819 USD
View
A
Retailer 9
-
$1,171 CAD
ZAR 13,540 ZAR
View
A
Retailer 10
-
$1,192 CAD
€813 EUR
View
Retailer 11
-
$2,193 CAD
$1,570 USD
View
Price last confirmed 16 days ago
B+
Retailer 12
-
$2,241 CAD
$1,604 USD
View
B+
Retailer 13
-
$2,364 CAD
SGD 2,287 SGD
View
B+
Retailer 14
-
$2,677 CAD
£1,509 GBP
View
B
Retailer 15
-
$3,239 CAD
$2,319 USD
View
Most Expensive
B
Brilliant Earth
21729045A · Oct 30
$3,255 CAD
$2,330 USD
View
15 more retailers have this diamond
Prices start from $633 CADSave up to $2,622 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
1.21ct Cushion
$633 CAD