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Radiant|Lab Grown|IGI

1.21ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG784604687

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG784604687

Diamond specifications and retailer prices

From $1,872 CAD
$1,340 USD
As of October 30, 2026
Save $566 CAD (23%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,438 CAD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant 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 LG784604687 or 784604687. Listed at 2 retailers as of October 30, 2026, with prices from $1,872 to $2,438, a $566 spread on the same certified stone. Blue Nile lists it at $2,438. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784604687
Dimensions7.66 × 5.37 × 3.52 mm
L/W Ratio1.43
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
7.66 mm5.37 mm1.21 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784604687
Side View
Table 63.0%Crown 41.9°Girdle: MediumPavilion 35.1°Culet: NoneDepth 65.5%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,438 CAD|Low: $499 CAD|High: $6,398 CAD|Avg: $2,385 CAD
Blue Nile
Retailer 2
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September 28, 2026
Retailer 12$499 CAD
Retailer 10$894 CAD
Retailer 11$1,173 CAD
Retailer 9$1,558 CAD
Retailer 8$1,565 CAD
Retailer 16$1,593 CAD
Retailer 6$1,838 CAD
Retailer 2$1,872 CAD
Blue Nile$2,438 CAD
Retailer 14$2,446 CAD
Retailer 15$2,652 CAD
Retailer 5$2,656 CAD
Retailer 13$3,082 CAD
Retailer 4$3,168 CAD
Retailer 7$4,111 CAD
Retailer 3$6,398 CAD

2 data points across 16 retailers

2 retailers$1,872 CAD to $2,438 CAD

B+
Cheapest Retailer
-
$1,872 CAD
$1,340 USD
Most Expensive
B
Blue Nile
29886102 · Oct 31
$2,438 CAD
$1,745 USD
View
1 more retailer has this diamond
Prices start from $1,872 CADSave up to $566 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.

B+
1.21ct Radiant
$1,872 CAD