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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 HK$1,395 HKD
As of November 6, 2026
Save HK$3,119 HKD (69%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$10,463 HKD 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

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 6
Current: HK$1,395 HKD|Low: HK$1,395 HKD|High: HK$4,930 HKD|Avg: HK$2,750 HKD|-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 1HK$1,395 HKD
Retailer 10HK$1,520 HKD
Retailer 4HK$1,701 HKD
Retailer 6HK$2,140 HKD
Retailer 2HK$2,383 HKD
Retailer 5HK$2,665 HKD
Retailer 9HK$2,829 HKD
Retailer 12HK$2,978 HKD
Retailer 7HK$3,010 HKD
Retailer 3HK$3,017 HKD
Retailer 11HK$3,049 HKD
Retailer 8HK$3,441 HKD
Retailer 13HK$4,514 HKD

25 data points across 13 retailers

17 retailersHK$1,395 HKD to HK$4,514 HKD

A
Cheapest Retailer
-
HK$1,395 HKD
A
Retailer 2
-
HK$1,520 HKD
View
A
Retailer 3
-
HK$1,701 HKD
View
A
Retailer 4
-
HK$2,140 HKD
View
A
Retailer 5
-
HK$2,383 HKD
View
Retailer 6
-
HK$2,547 HKD
View
Price last confirmed 38 days ago
Retailer 7
-
HK$2,665 HKD
View
Price last confirmed 14 days ago
Retailer 8
-
HK$2,704 HKD
View
Price last confirmed 51 days ago
A
Retailer 9
-
HK$2,829 HKD
View
A
Retailer 10
-
HK$2,978 HKD
View
B+
Retailer 11
-
HK$3,010 HKD
View
A
Retailer 12
-
HK$3,017 HKD
View
A
Retailer 13
-
HK$3,049 HKD
View
Retailer 14
-
HK$3,080 HKD
View
Price last confirmed 38 days ago
A
Retailer 15
-
HK$3,441 HKD
View
B+
Retailer 16
-
HK$4,514 HKD
View
Most Expensive
NZ Jewellers
b6300624-bdf0-44b2-8c56-d6e8312c65ea · Sep 28
HK$10,463 HKD
$1,335 USD
View
Price last confirmed 39 days ago
16 more retailers have this diamond
Prices start from HK$1,395 HKDSave up to HK$3,119 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
0.45ct Round
HK$1,395 HKD