Radiant|Natural|GIA

0.40ct I SI2 Radiant Natural Diamond

ID • I/SI2 • GIA 1553566105

Certificate GIA 1553566105

Diamond specifications and retailer prices

From $410 SGD
$321 USD
As of November 1, 2026
Save $721 SGD (64%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,879 SGD 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,879 SGD|Low: $410 SGD|High: $1,946 SGD|Avg: $788 SGD|-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 1, 2026
Retailer 3$410 SGD
Retailer 11$410 SGD
Retailer 13$444 SGD
Retailer 6$475 SGD
Retailer 5$478 SGD
Retailer 4$495 SGD
Retailer 9$582 SGD
Retailer 14$587 SGD
Retailer 12$598 SGD
Retailer 7$634 SGD
Retailer 10$797 SGD
Retailer 2$992 SGD
Retailer 8$1,132 SGD
NZ Jewellers$1,879 SGD

31 data points across 14 retailers

14 retailers$410 SGD to $1,132 SGD

A
Cheapest Retailer
-
$410 SGD
$321 USD
A
Retailer 2
-
$410 SGD
$321 USD
View
Final sale: no returns
A
Retailer 3
-
$444 SGD
$347 USD
View
A
Retailer 4
-
$475 SGD
HK$2,900 HKD
View
A
Retailer 5
-
$478 SGD
$374 USD
View
A
Retailer 6
-
$495 SGD
$387 USD
View
B+
Retailer 7
-
$582 SGD
$455 USD
View
B+
Retailer 8
-
$587 SGD
$459 USD
View
B+
Retailer 9
-
$598 SGD
$468 USD
View
B+
Retailer 10
-
$634 SGD
£390 GBP
View
B+
Retailer 11
-
$797 SGD
€594 EUR
View
B
Retailer 12
-
$992 SGD
£611 GBP
View
B
Retailer 13
-
$1,132 SGD
£697 GBP
View
Most Expensive
NZ Jewellers
bb499261-4238-4c50-b80c-a9e86ae7201d · Oct 30
$1,879 SGD
$1,470 USD
View
Price under review
13 more retailers have this diamond
Prices start from $410 SGDSave up to $721 SGD

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
$410 SGD