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Round|Lab Grown|IGI

1.21ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG781617863

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781617863

Diamond specifications and retailer prices

From $550 CAD
$393 USD
As of October 29, 2026
Save $3,243 CAD (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,793 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 LG781617863 or 781617863. Listed at 22 retailers as of October 29, 2026, with prices from $550 to $3,793, a $3,243 spread on the same certified stone. Brilliant Earth lists it at $3,793. 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 angle35.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781617863
Dimensions6.82 × 6.88 × 4.23 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
6.82 mm6.88 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781617863
Side View
Table 56.0%Crown 35.2°Girdle: MediumPavilion 40.5°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
A
Excellent
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: $3,793 CAD|Low: $616 CAD|High: $3,793 CAD|Avg: $1,397 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
October 30, 2026
Retailer 3$616 CAD
Retailer 10$683 CAD
Retailer 8$889 CAD
Retailer 4$917 CAD
Retailer 12$1,006 CAD
Retailer 2$1,116 CAD
Retailer 7$1,173 CAD
Retailer 6$1,196 CAD
Retailer 9$1,640 CAD
Retailer 11$2,173 CAD
Retailer 5$2,682 CAD
Brilliant Earth$3,793 CAD

42 data points across 12 retailers

22 retailers$550 CAD to $3,793 CAD

A
Cheapest Retailer
-
$550 CAD
$393 USD
A
Retailer 2
-
$616 CAD
$440 USD
View
Final sale: no returns
A
Retailer 3
-
$616 CAD
$440 USD
View
A
Retailer 4
-
$683 CAD
$488 USD
View
A
Retailer 5
-
$683 CAD
$488 USD
View
A
Retailer 6
-
$752 CAD
HK$4,200 HKD
View
A
Retailer 7
-
$889 CAD
$635 USD
View
B+
Retailer 8
-
$917 CAD
$655 USD
View
B+
Retailer 9
-
$1,006 CAD
$719 USD
View
B+
Retailer 10
-
$1,064 CAD
$760 USD
View
B+
Retailer 11
-
$1,116 CAD
£628 GBP
View
B+
Retailer 12
-
$1,173 CAD
ZAR 13,540 ZAR
View
B+
Retailer 13
-
$1,196 CAD
€814 EUR
View
B
Retailer 14
-
$1,640 CAD
$1,172 USD
View
B
Retailer 15
-
$2,173 CAD
SGD 2,098 SGD
View
B
Retailer 16
-
$2,195 CAD
$1,568 USD
View
Retailer 17
-
$2,241 CAD
$1,601 USD
View
Price last confirmed 81 days ago
B
Retailer 18
-
$2,246 CAD
$1,604 USD
View
B
Retailer 19
-
$2,500 CAD
$1,786 USD
View
B
Retailer 20
-
$2,534 CAD
$1,810 USD
View
B
Retailer 21
-
$2,682 CAD
£1,509 GBP
View
Most Expensive
B
Brilliant Earth
19001902A · Oct 29
$3,793 CAD
$2,710 USD
View
21 more retailers have this diamond
Prices start from $550 CADSave up to $3,243 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
$550 CAD