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Round|Lab Grown|IGI

1.21ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG788624317

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788624317

Diamond specifications and retailer prices

From $549 CAD
$393 USD
As of October 29, 2026
Save $3,237 CAD (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,786 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 LG788624317 or 788624317. Listed at 23 retailers as of October 29, 2026, with prices from $549 to $3,786, a $3,237 spread on the same certified stone. Brilliant Earth lists it at $3,786. 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 angle33.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788624317
Dimensions6.84 × 6.89 × 4.21 mm
L/W Ratio1.01
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
6.84 mm6.89 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788624317
Side View
Table 55.0%Crown 33.9°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.4%

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: Oct 29
Current: $3,786 CAD|Low: $528 CAD|High: $3,786 CAD|Avg: $1,409 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
October 30, 2026
Retailer 12$549 CAD
Retailer 5$615 CAD
Retailer 13$682 CAD
Retailer 10$887 CAD
Retailer 4$1,004 CAD
Retailer 8$1,075 CAD
Retailer 2$1,084 CAD
Retailer 6$1,114 CAD
Retailer 9$1,171 CAD
Retailer 11$1,637 CAD
Retailer 3$2,169 CAD
Retailer 7$2,677 CAD
Brilliant Earth$3,786 CAD

40 data points across 13 retailers

23 retailers$549 CAD to $3,786 CAD

A
Cheapest Retailer
-
$549 CAD
$393 USD
A
Retailer 2
-
$615 CAD
$440 USD
View
Final sale: no returns
A
Retailer 3
-
$615 CAD
$440 USD
View
A
Retailer 4
-
$682 CAD
$488 USD
View
A
Retailer 5
-
$682 CAD
$488 USD
View
A
Retailer 6
-
$751 CAD
HK$4,200 HKD
View
A
Retailer 7
-
$887 CAD
$635 USD
View
A
Retailer 8
-
$915 CAD
$655 USD
View
B+
Retailer 9
-
$1,004 CAD
$719 USD
View
B+
Retailer 10
-
$1,062 CAD
$760 USD
View
B+
Retailer 11
-
$1,075 CAD
€733 EUR
View
B+
Retailer 12
-
$1,084 CAD
£611 GBP
View
B+
Retailer 13
-
$1,114 CAD
£628 GBP
View
B+
Retailer 14
-
$1,171 CAD
ZAR 13,540 ZAR
View
B
Retailer 15
-
$1,637 CAD
$1,172 USD
View
B
Retailer 16
-
$2,169 CAD
SGD 2,098 SGD
View
B
Retailer 17
-
$2,190 CAD
$1,568 USD
View
Retailer 18
-
$2,236 CAD
$1,601 USD
View
Price last confirmed 81 days ago
B
Retailer 19
-
$2,241 CAD
$1,604 USD
View
B
Retailer 20
-
$2,495 CAD
$1,786 USD
View
B
Retailer 21
-
$2,529 CAD
$1,810 USD
View
B
Retailer 22
-
$2,677 CAD
£1,509 GBP
View
Most Expensive
B
Brilliant Earth
19349604A · Oct 29
$3,786 CAD
$2,710 USD
View
22 more retailers have this diamond
Prices start from $549 CADSave up to $3,237 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
$549 CAD