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Marquise|Lab Grown|IGI

1.21ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG739586856

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG739586856

Diamond specifications and retailer prices

From $616 CAD
As of November 4, 2026
Save $2,917 CAD (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,533 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 LG739586856 or 739586856. Listed at 23 retailers as of November 4, 2026, with prices from $616 to $3,533, a $2,917 spread on the same certified stone. Brilliant Earth lists it at $3,533. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739586856
Dimensions10.79 × 5.59 × 3.49 mm
L/W Ratio1.93
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
10.79 mm5.59 mm1.21 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739586856
Side View
Table 59.0%Crown 33.3°Girdle: MediumPavilion 40°Culet: NoneDepth 62.4%

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: $3,533 CAD|Low: $616 CAD|High: $4,134 CAD|Avg: $1,693 CAD|-14.5%
Brilliant Earth
Retailer 2
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Retailer 4
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Retailer 23
November 5, 2026
Retailer 16$616 CAD
Retailer 11$689 CAD
Retailer 7$690 CAD
Retailer 5$764 CAD
Retailer 23$764 CAD
Retailer 6$839 CAD
Retailer 19$964 CAD
Retailer 10$1,080 CAD
Retailer 4$1,166 CAD
Retailer 12$1,200 CAD
Retailer 20$1,211 CAD
Retailer 13$1,249 CAD
Retailer 18$1,316 CAD
Retailer 2$1,866 CAD
Retailer 3$2,052 CAD
Retailer 21$2,144 CAD
Retailer 9$2,235 CAD
Retailer 15$2,420 CAD
Retailer 22$2,454 CAD
Retailer 8$2,500 CAD
Retailer 14$2,739 CAD
Retailer 17$2,803 CAD
Brilliant Earth$3,533 CAD

40 data points across 23 retailers

23 retailers$616 CAD to $3,533 CAD

A
Cheapest Retailer
-
$616 CAD
A
Retailer 2
-
$689 CAD
View
Final sale: no returns
A
Retailer 3
-
$690 CAD
View
Retailer 4
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$764 CAD
View
Price last confirmed 11 days ago
A
Retailer 5
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$764 CAD
View
A
Retailer 6
-
$839 CAD
View
A
Retailer 7
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$964 CAD
View
B+
Retailer 8
-
$1,080 CAD
View
B+
Retailer 9
-
$1,166 CAD
View
B+
Retailer 10
-
$1,200 CAD
View
Retailer 11
-
$1,211 CAD
View
Price last confirmed 9 days ago
B+
Retailer 12
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$1,249 CAD
View
B+
Retailer 13
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$1,316 CAD
View
B+
Retailer 14
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$1,866 CAD
View
B
Retailer 15
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$2,052 CAD
View
Retailer 16
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$2,144 CAD
View
Price last confirmed 8 days ago
B
Retailer 17
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$2,235 CAD
View
B
Retailer 18
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$2,420 CAD
View
B
Retailer 19
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$2,454 CAD
View
B
Retailer 20
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$2,500 CAD
View
B
Retailer 21
-
$2,739 CAD
View
B
Retailer 22
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$2,803 CAD
View
Most Expensive
B
Brilliant Earth
19056215A · Nov 4
$3,533 CAD
$2,530 USD
View
22 more retailers have this diamond
Prices start from $616 CADSave up to $2,917 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
$616 CAD