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Radiant|Lab Grown|IGI

5.28ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG780661346

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

Certificate IGI LG780661346

Diamond specifications and retailer prices

From HK$68,148 HKD
$8,686 USD
As of October 30, 2026
Save HK$151,981 HKD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$220,128 HKD at Frank Darling · As of October 31, 2026
View at Frank Darling

About this 5.28ct lab-grown radiant diamond

This 5.28ct 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 LG780661346 or 780661346. Listed at 15 retailers as of October 30, 2026, with prices from HK$68,148 to HK$220,128, a HK$151,981 spread on the same certified stone. Frank Darling lists it at HK$220,128. 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

5.28
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780661346
Dimensions12.25 × 8.73 × 5.59 mm
L/W Ratio1.40
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
12.25 mm8.73 mm5.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780661346
Side View
Table 66.0%Crown 41.9°Girdle: Slightly ThickPavilion 33.1°Culet: NoneDepth 64.0%

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$220,128 HKD|Low: HK$68,148 HKD|High: HK$476,234 HKD|Avg: HK$141,531 HKD|-18.3%
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 10HK$68,148 HKD
Retailer 6HK$68,650 HKD
Retailer 12HK$69,199 HKD
Retailer 4HK$70,870 HKD
Retailer 15HK$78,300 HKD
Retailer 13HK$87,935 HKD
Retailer 11HK$91,457 HKD
Retailer 9HK$94,501 HKD
Retailer 3HK$98,134 HKD
Retailer 7HK$98,432 HKD
Retailer 2HK$139,497 HKD
Retailer 5HK$153,704 HKD
Retailer 8HK$156,585 HKD
Frank DarlingHK$220,128 HKD
Retailer 14HK$425,237 HKD

39 data points across 15 retailers

15 retailersHK$68,148 HKD to HK$220,128 HKD

A+
Cheapest Retailer
-
HK$68,148 HKD
$8,686 USD
A
Retailer 2
-
HK$68,650 HKD
$8,750 USD
View
A
Retailer 3
-
HK$69,199 HKD
$8,820 USD
View
A
Retailer 4
-
HK$70,870 HKD
$9,033 USD
View
A
Retailer 5
-
HK$78,300 HKD
$9,980 USD
View
A
Retailer 6
-
HK$87,935 HKD
$11,208 USD
View
A
Retailer 7
-
HK$91,457 HKD
$11,657 USD
View
A
Retailer 8
-
HK$94,501 HKD
$12,045 USD
View
A
Retailer 9
-
HK$98,134 HKD
$12,508 USD
View
A
Retailer 10
-
HK$98,432 HKD
$12,546 USD
View
Final sale: no returns
A
Retailer 11
-
HK$139,497 HKD
$17,780 USD
View
Retailer 12
-
HK$153,704 HKD
€18,658 EUR
View
Price last confirmed 7 days ago
B+
Retailer 13
-
HK$156,585 HKD
£15,715 GBP
View
Most Expensive
B+
Frank Darling
P82C-5EL · Oct 31
HK$220,128 HKD
$28,057 USD
View
13 more retailers have this diamond
Prices start from HK$68,148 HKDSave up to HK$151,981 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+
5.28ct Radiant
HK$68,148 HKD