Marquise|Lab Grown|IGI

1.21ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG816626986

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG816626986

Diamond specifications and retailer prices

From $513 CAD
$367 USD
As of October 30, 2026
Save $2,533 CAD (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,045 CAD at Brilliant Earth · As of October 28, 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816626986 or 816626986. Listed at 23 retailers as of October 28, 2026, with prices from $513 to $3,045, a $2,533 spread on the same certified stone. Brilliant Earth lists it at $3,045. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816626986
Dimensions10.98 × 5.48 × 3.48 mm
L/W Ratio2.00
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
10.98 mm5.48 mm1.21 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816626986
Side View
Table 59.0%Crown 36.2°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 63.5%

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: $3,045 CAD|Low: $434 CAD|High: $3,129 CAD|Avg: $1,284 CAD|-2.7%
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
October 30, 2026
Retailer 6$434 CAD
Retailer 3$513 CAD
Retailer 10$569 CAD
Retailer 9$859 CAD
Retailer 8$912 CAD
Retailer 13$918 CAD
Retailer 7$976 CAD
Retailer 2$1,016 CAD
Retailer 14$1,136 CAD
Retailer 12$1,416 CAD
Retailer 4$1,826 CAD
Retailer 5$1,888 CAD
Retailer 11$2,280 CAD
Brilliant Earth$3,045 CAD

42 data points across 14 retailers

23 retailers$513 CAD to $3,045 CAD

Retailer 1
-
$434 CAD
$311 USD
Price last confirmed 28 days ago
Retailer 2
-
$450 CAD
$322 USD
View
Price last confirmed 17 days ago
Retailer 3
-
$450 CAD
$322 USD
View
Price last confirmed 22 days ago
A
Retailer 4
-
$513 CAD
$367 USD
View
Final sale: no returns
Retailer 5
-
$524 CAD
$375 USD
View
Price last confirmed 32 days ago
Retailer 6
-
$553 CAD
$396 USD
View
Price last confirmed 32 days ago
Retailer 7
-
$557 CAD
$399 USD
View
Price last confirmed 27 days ago
Retailer 8
-
$557 CAD
$399 USD
View
Price last confirmed 20 days ago
Retailer 9
-
$557 CAD
$399 USD
View
Price last confirmed 18 days ago
A
Retailer 10
-
$569 CAD
$407 USD
View
A
Retailer 11
-
$859 CAD
$615 USD
View
A
Retailer 12
-
$912 CAD
€622 EUR
View
A
Retailer 13
-
$918 CAD
$657 USD
View
A
Retailer 14
-
$976 CAD
ZAR 11,290 ZAR
View
A
Retailer 15
-
$1,016 CAD
£573 GBP
View
B+
Retailer 16
-
$1,136 CAD
$813 USD
View
B+
Retailer 17
-
$1,416 CAD
$1,014 USD
View
Retailer 18
-
$1,794 CAD
$1,284 USD
View
Price last confirmed 18 days ago
Retailer 19
-
$1,802 CAD
$1,290 USD
View
Price last confirmed 30 days ago
B
Retailer 20
-
$1,826 CAD
$1,307 USD
View
B
Retailer 21
-
$1,888 CAD
$1,352 USD
View
B
Retailer 22
-
$2,280 CAD
£1,285 GBP
View
Most Expensive
B
Brilliant Earth
20999002A · Oct 28
$3,045 CAD
$2,180 USD
View
22 more retailers have this diamond
Prices start from $513 CADSave up to $2,533 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
$513 CAD