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Round|Lab Grown|IGI

1.21ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG811623471

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811623471

Diamond specifications and retailer prices

From $360 CAD
$258 USD
As of October 29, 2026
Save $2,126 CAD (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,486 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811623471 or 811623471. Listed at 21 retailers as of October 29, 2026, with prices from $360 to $2,486, a $2,126 spread on the same certified stone. Brilliant Earth lists it at $2,486. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811623471
Dimensions6.92 × 6.86 × 4.16 mm
L/W Ratio1.01
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
6.92 mm6.86 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811623471
Side View
Table 59.0%Crown 34°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.3%

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 29
Current: $2,486 CAD|Low: $358 CAD|High: $2,920 CAD|Avg: $1,067 CAD|-14.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 11
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Retailer 21
October 30, 2026
Retailer 10$360 CAD
Retailer 21$402 CAD
Retailer 5$418 CAD
Retailer 6$447 CAD
Retailer 12$447 CAD
Retailer 17$671 CAD
Retailer 18$708 CAD
Retailer 15$745 CAD
Retailer 7$747 CAD
Retailer 16$768 CAD
Retailer 8$798 CAD
Retailer 2$852 CAD
Retailer 9$996 CAD
Retailer 4$1,373 CAD
Retailer 14$1,437 CAD
Retailer 20$1,453 CAD
Retailer 11$1,509 CAD
Retailer 19$1,584 CAD
Retailer 13$1,802 CAD
Retailer 3$2,109 CAD
Brilliant Earth$2,486 CAD

29 data points across 21 retailers

21 retailers$360 CAD to $2,486 CAD

A
Cheapest Retailer
-
$360 CAD
$258 USD
A
Retailer 2
-
$402 CAD
$288 USD
View
Final sale: no returns
A
Retailer 3
-
$418 CAD
$299 USD
View
A
Retailer 4
-
$447 CAD
$320 USD
View
A
Retailer 5
-
$447 CAD
$320 USD
View
A
Retailer 6
-
$671 CAD
$480 USD
View
A
Retailer 7
-
$708 CAD
HK$3,961 HKD
View
A
Retailer 8
-
$745 CAD
€508 EUR
View
A
Retailer 9
-
$747 CAD
$535 USD
View
A
Retailer 10
-
$768 CAD
ZAR 8,886 ZAR
View
A
Retailer 11
-
$798 CAD
$571 USD
View
A
Retailer 12
-
$852 CAD
£480 GBP
View
B+
Retailer 13
-
$996 CAD
$713 USD
View
B+
Retailer 14
-
$1,373 CAD
$983 USD
View
B+
Retailer 15
-
$1,437 CAD
$1,029 USD
View
B+
Retailer 16
-
$1,453 CAD
SGD 1,406 SGD
View
B+
Retailer 17
-
$1,509 CAD
$1,080 USD
View
B+
Retailer 18
-
$1,584 CAD
$1,134 USD
View
B+
Retailer 19
-
$1,802 CAD
£1,016 GBP
View
Retailer 20
-
$2,109 CAD
$1,510 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21422152A · Oct 29
$2,486 CAD
$1,780 USD
View
20 more retailers have this diamond
Prices start from $360 CADSave up to $2,126 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