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Radiant|Lab Grown|IGI

1.56ct F IF Radiant Lab Grown Diamond

ID • F/IF • IGI LG620429386

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

Certificate IGI LG620429386

Diamond specifications and retailer prices

From HK$2,126 HKD
As of November 4, 2026
Save HK$17,645 HKD (89%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$22,204 HKD at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

About this 1.56ct lab-grown radiant diamond

This 1.56ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG620429386 or 620429386. Listed at 21 retailers as of November 4, 2026, with a 830% 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

1.56
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle50.8°
Pavilion angle33°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620429386
Dimensions8.10 × 5.76 × 3.75 mm
L/W Ratio1.41
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
8.10 mm5.76 mm1.56 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620429386
Side View
Table 65.0%Crown 50.8°Girdle: MED-THKPavilion 33°Culet: NoneDepth 65.1%

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$19,771 HKD|Low: HK$2,126 HKD|High: HK$22,204 HKD|Avg: HK$8,174 HKD|-11.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 5, 2026
Retailer 12HK$2,126 HKD
Retailer 11HK$2,464 HKD
Retailer 21HK$2,636 HKD
Retailer 15HK$2,981 HKD
Retailer 3HK$3,884 HKD
Retailer 9HK$4,370 HKD
Retailer 19HK$4,660 HKD
Retailer 18HK$5,006 HKD
Retailer 2HK$5,108 HKD
Retailer 5HK$5,288 HKD
Retailer 7HK$6,488 HKD
Retailer 16HK$6,818 HKD
Retailer 20HK$8,089 HKD
Retailer 6HK$9,344 HKD
Retailer 17HK$9,956 HKD
Retailer 8HK$10,631 HKD
Retailer 10HK$10,898 HKD
Retailer 13HK$11,612 HKD
Retailer 14HK$15,715 HKD
Retailer 4HK$18,830 HKD
Brilliant EarthHK$19,771 HKD

11 data points across 21 retailers

21 retailersHK$2,126 HKD to HK$19,771 HKD

A
Cheapest Retailer
-
HK$2,126 HKD
A
Retailer 2
-
HK$2,464 HKD
View
A
Retailer 3
-
HK$2,636 HKD
View
A
Retailer 4
-
HK$2,981 HKD
View
A
Retailer 5
-
HK$3,884 HKD
View
A
Retailer 6
-
HK$4,370 HKD
View
A
Retailer 7
-
HK$4,660 HKD
View
A
Retailer 8
-
HK$5,006 HKD
View
A
Retailer 9
-
HK$5,108 HKD
View
A
Retailer 10
-
HK$5,288 HKD
View
A
Retailer 11
-
HK$6,488 HKD
View
B+
Retailer 12
-
HK$6,818 HKD
View
B+
Retailer 13
-
HK$8,089 HKD
View
B+
Retailer 14
-
HK$9,344 HKD
View
B+
Retailer 15
-
HK$9,956 HKD
View
B+
Retailer 16
-
HK$10,631 HKD
View
B+
Retailer 17
-
HK$10,898 HKD
View
B+
Retailer 18
-
HK$11,612 HKD
View
B
Retailer 19
-
HK$18,830 HKD
View
B
Retailer 20
-
HK$19,771 HKD
View
Most Expensive
Brilliant Earth
13715575B · Oct 21
HK$22,204 HKD
$2,830 USD
View
Price last confirmed 14 days ago
20 more retailers have this diamond
Prices start from HK$2,126 HKDSave up to HK$17,645 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
1.56ct Radiant
HK$2,126 HKD