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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 $13,063 AUD
$9,176 USD
As of October 30, 2026
Save $29,159 AUD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $42,222 AUD at Frank Darling · As of October 31, 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 30, 2026, with prices from $13,063 to $42,222, a $29,159 spread on the same certified stone. Frank Darling lists it at $42,222. 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
Colour
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $42,222 AUD|Low: $13,063 AUD|High: $88,206 AUD|Avg: $25,855 AUD|-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 30, 2026
Retailer 10$13,063 AUD
Retailer 12$13,140 AUD
Retailer 6$13,311 AUD
Retailer 4$13,585 AUD
Retailer 15$14,998 AUD
Retailer 3$15,675 AUD
Retailer 13$16,588 AUD
Retailer 9$17,411 AUD
Retailer 11$17,525 AUD
Retailer 7$17,628 AUD
Retailer 2$24,970 AUD
Retailer 8$27,013 AUD
Retailer 5$29,499 AUD
Frank Darling$42,222 AUD
Retailer 14$81,515 AUD

38 data points across 15 retailers

15 retailers$13,063 AUD to $42,222 AUD

A+
Cheapest Retailer
-
$13,063 AUD
$9,176 USD
A
Retailer 2
-
$13,140 AUD
$9,230 USD
View
A
Retailer 3
-
$13,311 AUD
$9,350 USD
View
A
Retailer 4
-
$13,585 AUD
$9,543 USD
View
A
Retailer 5
-
$14,998 AUD
$10,535 USD
View
A
Retailer 6
-
$15,675 AUD
$11,011 USD
View
A
Retailer 7
-
$16,588 AUD
$11,652 USD
View
A
Retailer 8
-
$17,411 AUD
$12,230 USD
View
A
Retailer 9
-
$17,525 AUD
$12,310 USD
View
A
Retailer 10
-
$17,628 AUD
$12,383 USD
View
Final sale: no returns
A
Retailer 11
-
$24,970 AUD
$17,540 USD
View
A
Retailer 12
-
$27,013 AUD
£14,941 GBP
View
Retailer 13
-
$29,499 AUD
€19,735 EUR
View
Price last confirmed 8 days ago
Most Expensive
B+
Frank Darling
P83F-17EL · Oct 31
$42,222 AUD
$29,659 USD
View
13 more retailers have this diamond
Prices start from $13,063 AUDSave up to $29,159 AUD

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
$13,063 AUD