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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 HK$71,992 HKD
$9,176 USD
As of October 30, 2026
Save HK$160,702 HKD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$232,694 HKD 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 HK$71,992 to HK$232,694, a HK$160,702 spread on the same certified stone. Frank Darling lists it at HK$232,694. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: HK$232,694 HKD|Low: HK$71,992 HKD|High: HK$486,120 HKD|Avg: HK$142,194 HKD|-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 31, 2026
Retailer 11HK$71,992 HKD
Retailer 13HK$72,416 HKD
Retailer 6HK$73,357 HKD
Retailer 5HK$74,872 HKD
Retailer 3HK$82,654 HKD
Retailer 4HK$86,389 HKD
Retailer 14HK$91,418 HKD
Retailer 10HK$95,953 HKD
Retailer 12HK$96,581 HKD
Retailer 7HK$97,153 HKD
Retailer 8HK$137,614 HKD
Retailer 9HK$148,873 HKD
Retailer 2HK$162,989 HKD
Frank DarlingHK$232,694 HKD
Retailer 15HK$449,245 HKD

39 data points across 15 retailers

15 retailersHK$71,992 HKD to HK$232,694 HKD

A+
Cheapest Retailer
-
HK$71,992 HKD
$9,176 USD
A
Retailer 2
-
HK$72,416 HKD
$9,230 USD
View
A
Retailer 3
-
HK$73,357 HKD
$9,350 USD
View
A
Retailer 4
-
HK$74,872 HKD
$9,543 USD
View
A
Retailer 5
-
HK$82,654 HKD
$10,535 USD
View
A
Retailer 6
-
HK$86,389 HKD
$11,011 USD
View
A
Retailer 7
-
HK$91,418 HKD
$11,652 USD
View
A
Retailer 8
-
HK$95,953 HKD
$12,230 USD
View
A
Retailer 9
-
HK$96,581 HKD
$12,310 USD
View
A
Retailer 10
-
HK$97,153 HKD
$12,383 USD
View
Final sale: no returns
A
Retailer 11
-
HK$137,614 HKD
$17,540 USD
View
A
Retailer 12
-
HK$148,873 HKD
£14,941 GBP
View
B+
Retailer 13
-
HK$162,989 HKD
€19,785 EUR
View
Most Expensive
B+
Frank Darling
P83F-17EL · Oct 31
HK$232,694 HKD
$29,659 USD
View
13 more retailers have this diamond
Prices start from HK$71,992 HKDSave up to HK$160,702 HKD

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
HK$71,992 HKD