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Round|Natural|GIA

0.45ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6445993327

Certificate GIA 6445993327

Diamond specifications and retailer prices

From $228 SGD
As of November 6, 2026
Save $510 SGD (69%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,711 SGD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 0.45ct natural round diamond

This 0.45ct natural round sits in the sub-half-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6445993327. Listed at 17 retailers as of November 4, 2026, with a 224% 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

0.45
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle33.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6445993327
Dimensions4.91 × 4.85 × 3.03 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
4.91 mm4.85 mm0.45 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6445993327
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.1%

Caratlytics Score

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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 6
Current: $228 SGD|Low: $228 SGD|High: $806 SGD|Avg: $450 SGD|-11.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 1$228 SGD
Retailer 10$249 SGD
Retailer 4$278 SGD
Retailer 6$350 SGD
Retailer 2$390 SGD
Retailer 5$436 SGD
Retailer 9$463 SGD
Retailer 12$487 SGD
Retailer 7$492 SGD
Retailer 3$493 SGD
Retailer 11$499 SGD
Retailer 8$563 SGD
Retailer 13$738 SGD

25 data points across 13 retailers

17 retailers$228 SGD to $738 SGD

A
Cheapest Retailer
-
$228 SGD
A
Retailer 2
-
$249 SGD
View
A
Retailer 3
-
$278 SGD
View
A
Retailer 4
-
$350 SGD
View
A
Retailer 5
-
$390 SGD
View
Retailer 6
-
$417 SGD
View
Price last confirmed 38 days ago
Retailer 7
-
$436 SGD
View
Price last confirmed 14 days ago
Retailer 8
-
$442 SGD
View
Price last confirmed 51 days ago
A
Retailer 9
-
$463 SGD
View
A
Retailer 10
-
$487 SGD
View
B+
Retailer 11
-
$492 SGD
View
A
Retailer 12
-
$493 SGD
View
A
Retailer 13
-
$499 SGD
View
Retailer 14
-
$504 SGD
View
Price last confirmed 38 days ago
A
Retailer 15
-
$563 SGD
View
B+
Retailer 16
-
$738 SGD
View
Most Expensive
NZ Jewellers
b6300624-bdf0-44b2-8c56-d6e8312c65ea · Sep 28
$1,711 SGD
$1,335 USD
View
Price last confirmed 39 days ago
16 more retailers have this diamond
Prices start from $228 SGDSave up to $510 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
0.45ct Round
$228 SGD