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Round|Natural|GIA

0.45ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5453558823

Certificate GIA 5453558823

Diamond specifications and retailer prices

From $384 NZD
As of November 6, 2026
Save $882 NZD (70%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,165 NZD 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 5453558823. Listed at 13 retailers as of November 4, 2026, with a 230% 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
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 5453558823
Dimensions4.94 × 4.97 × 3.00 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
4.94 mm4.97 mm0.45 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5453558823
Side View
Table 60.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.5%

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: $384 NZD|Low: $345 NZD|High: $1,275 NZD|Avg: $687 NZD|+7.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 1$384 NZD
Retailer 3$500 NZD
Retailer 4$500 NZD
Retailer 2$501 NZD
Retailer 12$556 NZD
Retailer 11$633 NZD
Retailer 5$693 NZD
Retailer 6$756 NZD
Retailer 8$855 NZD
Retailer 7$909 NZD
Retailer 10$956 NZD
Retailer 9$1,266 NZD

32 data points across 12 retailers

13 retailers$384 NZD to $1,266 NZD

A
Cheapest Retailer
-
$384 NZD
Retailer 2
-
$415 NZD
View
Price last confirmed 38 days ago
Retailer 3
-
$465 NZD
View
Price last confirmed 36 days ago
Retailer 4
-
$518 NZD
View
Price last confirmed 38 days ago
Retailer 5
-
$633 NZD
View
Price last confirmed 38 days ago
A
Retailer 6
-
$633 NZD
View
B+
Retailer 7
-
$693 NZD
View
B+
Retailer 8
-
$756 NZD
View
B+
Retailer 9
-
$855 NZD
View
B+
Retailer 10
-
$909 NZD
View
B+
Retailer 11
-
$956 NZD
View
B
Retailer 12
-
$1,266 NZD
View
Most Expensive
NZ Jewellers
c916847f-3a29-41ba-912d-bc606e888b4f · Sep 28
$2,165 NZD
$1,200 USD
View
Price last confirmed 39 days ago
12 more retailers have this diamond
Prices start from $384 NZDSave up to $882 NZD

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
$384 NZD