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Round|Natural|GIA

0.45ct K SI1 Round Natural Diamond

VG • K/SI1 • GIA 6455989630

Certificate GIA 6455989630

Diamond specifications and retailer prices

From $254 SGD
As of November 6, 2026
Save $565 SGD (69%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,503 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 very-good cut grade and certified by GIA 6455989630. Listed at 17 retailers as of November 4, 2026, with a 222% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.45
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6455989630
Dimensions4.82 × 4.80 × 3.10 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
4.82 mm4.80 mm0.45 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6455989630
Side View
Table 58.0%Crown 35.5°Girdle: STK-THKPavilion 41.8°Culet: NoneDepth 64.4%

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: $254 SGD|Low: $254 SGD|High: $857 SGD|Avg: $499 SGD|-8.3%
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$254 SGD
Retailer 10$278 SGD
Retailer 5$310 SGD
Retailer 6$387 SGD
Retailer 3$410 SGD
Retailer 2$424 SGD
Retailer 9$445 SGD
Retailer 8$494 SGD
Retailer 12$521 SGD
Retailer 11$553 SGD
Retailer 7$613 SGD
Retailer 4$645 SGD
Retailer 13$819 SGD

25 data points across 13 retailers

17 retailers$254 SGD to $819 SGD

A
Cheapest Retailer
-
$254 SGD
A
Retailer 2
-
$278 SGD
View
A
Retailer 3
-
$310 SGD
View
A
Retailer 4
-
$387 SGD
View
A
Retailer 5
-
$410 SGD
View
A
Retailer 6
-
$424 SGD
View
Retailer 7
-
$432 SGD
View
Price last confirmed 51 days ago
Retailer 8
-
$437 SGD
View
Price last confirmed 38 days ago
A
Retailer 9
-
$445 SGD
View
A
Retailer 10
-
$494 SGD
View
A
Retailer 11
-
$521 SGD
View
Retailer 12
-
$528 SGD
View
Price last confirmed 38 days ago
B+
Retailer 13
-
$553 SGD
View
B+
Retailer 14
-
$613 SGD
View
B+
Retailer 15
-
$645 SGD
View
B
Retailer 16
-
$819 SGD
View
Most Expensive
NZ Jewellers
1c342dd8-52b5-4a13-91a1-827523fefde5 · Sep 28
$1,503 SGD
$1,177 USD
View
Price last confirmed 39 days ago
16 more retailers have this diamond
Prices start from $254 SGDSave up to $565 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
$254 SGD