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Radiant|Natural|GIA

0.40ct I SI2 Radiant Natural Diamond

ID • I/SI2 • GIA 1553566105

Certificate GIA 1553566105

Diamond specifications and retailer prices

From HK$2,518 HKD
$321 USD
As of November 1, 2026
Save HK$4,426 HKD (64%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$11,533 HKD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.4ct natural radiant diamond

This 0.4ct natural radiant sits in the sub-half-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553566105. Listed at 14 retailers as of November 1, 2026, with a 176% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.40
Carat
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.8°
Pavilion angle60.56°
OriginNatural
Grading LabGIA
CertificateGIA 1553566105
Dimensions5.07 × 3.74 × 2.53 mm
L/W Ratio1.36
Girdle conditionPolished
Top View
5.07 mm3.74 mm0.40 ctI / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1553566105
Side View
Table 65.0%Crown 35.8°Girdle: THN-MEDPavilion 60.56°Culet: NDepth 67.6%

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 1
Current: HK$11,533 HKD|Low: HK$2,518 HKD|High: HK$11,941 HKD|Avg: HK$4,887 HKD|-3.4%
NZ Jewellers
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
November 2, 2026
Retailer 3HK$2,518 HKD
Retailer 11HK$2,518 HKD
Retailer 13HK$2,722 HKD
Retailer 6HK$2,912 HKD
Retailer 5HK$2,934 HKD
Retailer 4HK$3,036 HKD
Retailer 9HK$3,570 HKD
Retailer 14HK$3,601 HKD
Retailer 12HK$3,672 HKD
Retailer 2HK$3,922 HKD
Retailer 10HK$4,893 HKD
Retailer 7HK$6,088 HKD
Retailer 8HK$6,945 HKD
NZ JewellersHK$11,533 HKD

32 data points across 14 retailers

14 retailersHK$2,518 HKD to HK$6,945 HKD

A
Cheapest Retailer
-
HK$2,518 HKD
$321 USD
A
Retailer 2
-
HK$2,518 HKD
$321 USD
View
Final sale: no returns
A
Retailer 3
-
HK$2,722 HKD
$347 USD
View
A
Retailer 4
-
HK$2,912 HKD
View
A
Retailer 5
-
HK$2,934 HKD
$374 USD
View
A
Retailer 6
-
HK$3,036 HKD
$387 USD
View
B+
Retailer 7
-
HK$3,570 HKD
$455 USD
View
B+
Retailer 8
-
HK$3,601 HKD
$459 USD
View
B+
Retailer 9
-
HK$3,672 HKD
$468 USD
View
B+
Retailer 10
-
HK$3,922 HKD
£394 GBP
View
B+
Retailer 11
-
HK$4,893 HKD
€594 EUR
View
B
Retailer 12
-
HK$6,088 HKD
£611 GBP
View
B
Retailer 13
-
HK$6,945 HKD
£697 GBP
View
Most Expensive
NZ Jewellers
bb499261-4238-4c50-b80c-a9e86ae7201d · Oct 30
HK$11,533 HKD
$1,470 USD
View
Price under review
13 more retailers have this diamond
Prices start from HK$2,518 HKDSave up to HK$4,426 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
0.40ct Radiant
HK$2,518 HKD