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Radiant|Lab Grown|IGI

5.21ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG784644229

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

Certificate IGI LG784644229

Diamond specifications and retailer prices

From $12,843 CAD
$9,176 USD
As of October 27, 2026
Save $28,668 CAD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $41,510 CAD at Frank Darling · As of October 29, 2026
View at Frank Darling

About this 5.21ct lab-grown radiant diamond

This 5.21ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG784644229 or 784644229. Listed at 15 retailers as of October 27, 2026, with prices from $12,843 to $41,510, a $28,668 spread on the same certified stone. Frank Darling lists it at $41,510. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.21
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784644229
Dimensions12.05 × 8.70 × 5.77 mm
L/W Ratio1.39
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
12.05 mm8.70 mm5.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784644229
Side View
Table 63.0%Crown 40.1°Girdle: ThickPavilion 34.5°Culet: NoneDepth 66.3%

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 27
Current: $41,510 CAD|Low: $12,843 CAD|High: $86,719 CAD|Avg: $26,915 CAD|-12.5%
Frank Darling
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
October 29, 2026
Retailer 9$12,843 CAD
Retailer 11$12,918 CAD
Retailer 5$13,086 CAD
Retailer 3$13,356 CAD
Retailer 14$14,745 CAD
Retailer 15$15,411 CAD
Retailer 12$16,308 CAD
Retailer 8$17,117 CAD
Retailer 10$17,229 CAD
Retailer 7$17,331 CAD
Retailer 2$26,558 CAD
Retailer 4$29,002 CAD
Retailer 6$40,252 CAD
Frank Darling$41,510 CAD
Retailer 13$80,141 CAD

35 data points across 15 retailers

15 retailers$12,843 CAD to $41,510 CAD

A+
Cheapest Retailer
-
$12,843 CAD
$9,176 USD
A
Retailer 2
-
$12,918 CAD
$9,230 USD
View
A
Retailer 3
-
$13,086 CAD
$9,350 USD
View
A
Retailer 4
-
$13,356 CAD
$9,543 USD
View
A
Retailer 5
-
$14,745 CAD
$10,535 USD
View
A
Retailer 6
-
$15,411 CAD
$11,011 USD
View
A
Retailer 7
-
$16,308 CAD
$11,652 USD
View
A
Retailer 8
-
$17,117 CAD
$12,230 USD
View
A
Retailer 9
-
$17,229 CAD
$12,310 USD
View
A
Retailer 10
-
$17,331 CAD
$12,383 USD
View
Final sale: no returns
A
Retailer 11
-
$26,558 CAD
£14,941 GBP
View
B+
Retailer 12
-
$29,002 CAD
€19,735 EUR
View
B
Retailer 13
-
$40,252 CAD
$28,760 USD
View
Most Expensive
B+
Frank Darling
P83F-17EL · Oct 29
$41,510 CAD
$29,659 USD
View
13 more retailers have this diamond
Prices start from $12,843 CADSave up to $28,668 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+
5.21ct Radiant
$12,843 CAD