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Radiant|Lab Grown|IGI

1.28ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG816602405

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

Certificate IGI LG816602405

Diamond specifications and retailer prices

From HK$2,103 HKD
As of November 4, 2026
Save HK$15,864 HKD (88%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$19,418 HKD at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.28ct lab-grown radiant diamond

This 1.28ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816602405 or 816602405. Listed at 10 retailers as of November 4, 2026, with a 754% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816602405
Dimensions7.74 × 5.26 × 3.72 mm
L/W Ratio1.47
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
7.74 mm5.26 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816602405
Side View
Table 62.0%Crown 38.8°Girdle: MediumPavilion 39.4°Culet: NoneDepth 70.7%

Caratlytics Score

How it works →
A
Excellent
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: Nov 4
Current: HK$19,418 HKD|Low: HK$2,103 HKD|High: HK$25,813 HKD|Avg: HK$8,885 HKD|+5.4%
Rare Carat
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
Retailer 16
Retailer 17
Retailer 18
November 4, 2026
Retailer 2HK$2,103 HKD
Retailer 6HK$2,126 HKD
Retailer 12HK$2,636 HKD
Retailer 11HK$3,656 HKD
Retailer 4HK$5,359 HKD
Retailer 8HK$6,026 HKD
Retailer 5HK$6,167 HKD
Retailer 3HK$6,551 HKD
Retailer 9HK$7,022 HKD
Retailer 16HK$7,501 HKD
Retailer 18HK$7,532 HKD
Retailer 17HK$8,623 HKD
Retailer 7HK$10,160 HKD
Retailer 13HK$10,278 HKD
Retailer 10HK$12,294 HKD
Retailer 14HK$15,770 HKD
Retailer 15HK$17,967 HKD
Rare CaratHK$19,418 HKD

24 data points across 18 retailers

10 retailersHK$2,103 HKD to HK$17,967 HKD

A
Cheapest Retailer
-
HK$2,103 HKD
Final sale: no returns
A
Retailer 2
-
HK$2,636 HKD
View
A
Retailer 3
-
HK$3,656 HKD
View
B+
Retailer 4
-
HK$7,501 HKD
View
Retailer 5
-
HK$7,532 HKD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
HK$8,623 HKD
View
B+
Retailer 7
-
HK$10,278 HKD
View
B
Retailer 8
-
HK$15,770 HKD
View
B
Retailer 9
-
HK$17,967 HKD
View
Most Expensive
Rare Carat
PD-217234 · Oct 18
HK$19,418 HKD
$2,475 USD
View
Price last confirmed 16 days ago
9 more retailers have this diamond
Prices start from HK$2,103 HKDSave up to HK$15,864 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
1.28ct Radiant
HK$2,103 HKD