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Marquise|Lab Grown|IGI

1.21ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG681583490

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG681583490

Diamond specifications and retailer prices

From $570 CAD
$408 USD
As of October 30, 2026
Save $2,252 CAD (80%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,822 CAD at Brilliant Earth · As of October 30, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG681583490 or 681583490. Listed at 22 retailers as of October 30, 2026, with prices from $570 to $2,822, a $2,252 spread on the same certified stone. Brilliant Earth lists it at $2,822. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG681583490
Dimensions10.98 × 5.56 × 3.46 mm
L/W Ratio1.97
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
10.98 mm5.56 mm1.21 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG681583490
Side View
Table 57.0%Crown 33.2°Girdle: STK-THKPavilion 40.1°Culet: NoneDepth 62.2%

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: Oct 30
Current: $2,822 CAD|Low: $637 CAD|High: $3,580 CAD|Avg: $1,682 CAD|-1.5%
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
Retailer 17
Retailer 18
Retailer 19
October 30, 2026
Retailer 8$637 CAD
Retailer 3$707 CAD
Retailer 4$769 CAD
Retailer 13$915 CAD
Retailer 7$1,028 CAD
Retailer 9$1,120 CAD
Retailer 14$1,126 CAD
Retailer 2$1,163 CAD
Retailer 19$1,175 CAD
Retailer 12$1,216 CAD
Retailer 18$1,985 CAD
Retailer 5$2,065 CAD
Retailer 11$2,250 CAD
Retailer 16$2,263 CAD
Retailer 17$2,274 CAD
Retailer 6$2,323 CAD
Retailer 10$2,596 CAD
Retailer 15$2,768 CAD
Brilliant Earth$2,822 CAD

41 data points across 19 retailers

22 retailers$570 CAD to $2,822 CAD

A
Cheapest Retailer
-
$570 CAD
$408 USD
A
Retailer 2
-
$637 CAD
$456 USD
View
Final sale: no returns
A
Retailer 3
-
$638 CAD
$457 USD
View
A
Retailer 4
-
$707 CAD
$506 USD
View
A
Retailer 5
-
$707 CAD
$506 USD
View
A
Retailer 6
-
$769 CAD
HK$4,300 HKD
View
A
Retailer 7
-
$915 CAD
$655 USD
View
A
Retailer 8
-
$1,028 CAD
$736 USD
View
B+
Retailer 9
-
$1,120 CAD
$802 USD
View
B+
Retailer 10
-
$1,126 CAD
€768 EUR
View
B+
Retailer 11
-
$1,163 CAD
£656 GBP
View
B+
Retailer 12
-
$1,175 CAD
$841 USD
View
B+
Retailer 13
-
$1,216 CAD
ZAR 14,060 ZAR
View
B
Retailer 14
-
$1,985 CAD
$1,421 USD
View
B
Retailer 15
-
$2,065 CAD
£1,164 GBP
View
B
Retailer 16
-
$2,250 CAD
SGD 2,177 SGD
View
B+
Retailer 17
-
$2,263 CAD
$1,620 USD
View
B
Retailer 18
-
$2,274 CAD
$1,628 USD
View
B
Retailer 19
-
$2,323 CAD
$1,663 USD
View
B
Retailer 20
-
$2,596 CAD
$1,859 USD
View
B
Retailer 21
-
$2,768 CAD
£1,560 GBP
View
Most Expensive
B
Brilliant Earth
19056507A · Oct 30
$2,822 CAD
$2,020 USD
View
21 more retailers have this diamond
Prices start from $570 CADSave up to $2,252 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
$570 CAD