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Radiant|Lab Grown|IGI

1.21ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG758550096

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

Certificate IGI LG758550096

Diamond specifications and retailer prices

From HK$2,903 HKD
As of November 4, 2026
Save HK$10,906 HKD (79%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$14,397 HKD at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG758550096 or 758550096. Listed at 9 retailers as of November 4, 2026, with a 376% 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

1.21
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG758550096
Dimensions7.78 × 5.36 × 3.54 mm
L/W Ratio1.45
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
7.78 mm5.36 mm1.21 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG758550096
Side View
Table 62.0%Crown 39.8°Girdle: MediumPavilion 35.8°Culet: NoneDepth 66.0%

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$14,397 HKD|Low: HK$2,903 HKD|High: HK$18,751 HKD|Avg: HK$7,522 HKD|-1.6%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 4, 2026
Retailer 4HK$2,903 HKD
Retailer 7HK$3,013 HKD
Retailer 6HK$3,939 HKD
Retailer 2HK$4,143 HKD
Retailer 9HK$4,645 HKD
Retailer 8HK$8,544 HKD
Retailer 3HK$8,976 HKD
Retailer 5HK$13,809 HKD
Rare CaratHK$14,397 HKD

44 data points across 9 retailers

9 retailersHK$2,903 HKD to HK$13,809 HKD

A
Cheapest Retailer
-
HK$2,903 HKD
A
Retailer 2
-
HK$3,013 HKD
View
A
Retailer 3
-
HK$3,939 HKD
View
A
Retailer 4
-
HK$4,143 HKD
View
A
Retailer 5
-
HK$4,645 HKD
View
B+
Retailer 6
-
HK$8,544 HKD
View
B+
Retailer 7
-
HK$8,976 HKD
View
B
Retailer 8
-
HK$13,809 HKD
View
Most Expensive
Rare Carat
BJ-107A · Oct 18
HK$14,397 HKD
$1,835 USD
View
Price last confirmed 16 days ago
8 more retailers have this diamond
Prices start from HK$2,903 HKDSave up to HK$10,906 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
1.21ct Radiant
HK$2,903 HKD