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Marquise|Lab Grown|IGI

1.21ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG843637937

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843637937

Diamond specifications and retailer prices

From $363 CAD
As of November 4, 2026
Save $2,654 CAD (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,017 CAD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.21ct lab-grown marquise diamond

This 1.21ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG843637937 or 843637937. Listed at 19 retailers as of November 4, 2026, with prices from $363 to $3,017, a $2,654 spread on the same certified stone. Brilliant Earth lists it at $3,017. 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
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843637937
Dimensions11.35 × 5.33 × 3.33 mm
L/W Ratio2.13
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.35 mm5.33 mm1.21 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843637937
Side View
Table 60.0%Crown 38.9°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 62.5%

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: Nov 4
Current: $1,078 CAD|Low: $363 CAD|High: $2,356 CAD|Avg: $1,130 CAD|-2.4%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 5, 2026
Retailer 3$363 CAD
Retailer 11$405 CAD
Retailer 13$448 CAD
Retailer 18$462 CAD
Retailer 6$608 CAD
Retailer 17$670 CAD
Retailer 8$786 CAD
Retailer 14$852 CAD
Retailer 9$915 CAD
Retailer 1$1,078 CAD
Retailer 7$1,109 CAD
Retailer 5$1,383 CAD
Retailer 4$1,447 CAD
Retailer 2$1,518 CAD
Retailer 15$1,584 CAD
Retailer 16$1,800 CAD
Retailer 12$2,257 CAD
Retailer 10$2,356 CAD

9 data points across 18 retailers

19 retailers$363 CAD to $3,017 CAD

A
Cheapest Retailer
-
$363 CAD
A
Retailer 2
-
$405 CAD
View
Final sale: no returns
A
Retailer 3
-
$448 CAD
View
A
Retailer 4
-
$462 CAD
View
A
Retailer 5
-
$608 CAD
View
A
Retailer 6
-
$670 CAD
View
A
Retailer 7
-
$786 CAD
View
A
Retailer 8
-
$852 CAD
View
A
Retailer 9
-
$915 CAD
View
A
Retailer 10
-
$1,078 CAD
View
B+
Retailer 11
-
$1,109 CAD
View
B+
Retailer 12
-
$1,383 CAD
View
B+
Retailer 13
-
$1,447 CAD
View
B+
Retailer 14
-
$1,518 CAD
View
B+
Retailer 15
-
$1,584 CAD
View
B+
Retailer 16
-
$1,800 CAD
View
B
Retailer 17
-
$2,257 CAD
View
B
Retailer 18
-
$2,356 CAD
View
Most Expensive
B
Brilliant Earth
22406151A · Nov 4
$3,017 CAD
$2,160 USD
View
18 more retailers have this diamond
Prices start from $363 CADSave up to $2,654 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 Marquise
$363 CAD