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Round|Lab Grown|IGI

1.21ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG811638127

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811638127

Diamond specifications and retailer prices

From $360 CAD
$257 USD
As of October 29, 2026
Save $2,062 CAD (85%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,421 CAD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round 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 LG811638127 or 811638127. Listed at 20 retailers as of October 29, 2026, with prices from $360 to $2,421, a $2,062 spread on the same certified stone. Brilliant Earth lists it at $2,421. 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 angle34.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811638127
Dimensions6.87 × 6.84 × 4.20 mm
L/W Ratio1.00
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
6.87 mm6.84 mm1.21 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811638127
Side View
Table 57.0%Crown 34.1°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.3%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $2,421 CAD|Low: $354 CAD|High: $2,421 CAD|Avg: $1,061 CAD
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$360 CAD
Retailer 15$402 CAD
Retailer 4$417 CAD
Retailer 5$446 CAD
Retailer 10$446 CAD
Retailer 3$693 CAD
Retailer 12$738 CAD
Retailer 6$746 CAD
Retailer 13$766 CAD
Retailer 2$849 CAD
Retailer 7$922 CAD
Retailer 19$1,370 CAD
Retailer 18$1,432 CAD
Retailer 11$1,433 CAD
Retailer 9$1,506 CAD
Retailer 17$1,562 CAD
Retailer 14$1,790 CAD
Retailer 16$2,113 CAD
Brilliant Earth$2,421 CAD

38 data points across 19 retailers

20 retailers$360 CAD to $2,421 CAD

A+
Cheapest Retailer
-
$360 CAD
$257 USD
A
Retailer 2
-
$402 CAD
$287 USD
View
Final sale: no returns
A
Retailer 3
-
$417 CAD
$298 USD
View
A
Retailer 4
-
$446 CAD
$319 USD
View
A
Retailer 5
-
$446 CAD
$319 USD
View
Retailer 6
-
$452 CAD
$323 USD
View
Price last confirmed 58 days ago
A
Retailer 7
-
$693 CAD
$495 USD
View
A
Retailer 8
-
$738 CAD
€502 EUR
View
A
Retailer 9
-
$746 CAD
$533 USD
View
A
Retailer 10
-
$766 CAD
ZAR 8,845 ZAR
View
A
Retailer 11
-
$849 CAD
£478 GBP
View
B+
Retailer 12
-
$922 CAD
$659 USD
View
B+
Retailer 13
-
$1,370 CAD
$979 USD
View
B+
Retailer 14
-
$1,432 CAD
SGD 1,383 SGD
View
B+
Retailer 15
-
$1,433 CAD
$1,024 USD
View
B+
Retailer 16
-
$1,506 CAD
$1,076 USD
View
B+
Retailer 17
-
$1,562 CAD
$1,116 USD
View
B+
Retailer 18
-
$1,790 CAD
£1,007 GBP
View
Retailer 19
-
$2,113 CAD
$1,510 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
21422382A · Oct 29
$2,421 CAD
$1,730 USD
View
19 more retailers have this diamond
Prices start from $360 CADSave up to $2,062 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 Round
$360 CAD