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Round|Natural|GIA

0.45ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7512589083

Certificate GIA 7512589083

Diamond specifications and retailer prices

From $608 NZD
As of November 6, 2026
Save $1,068 NZD (64%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,879 NZD at NZ Jewellers · As of October 8, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7512589083. Listed at 23 retailers as of November 4, 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

0.45
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7512589083
Dimensions4.86 × 4.89 × 3.07 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Key to symbols
Crystal
Top View
4.86 mm4.89 mm0.45 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7512589083
Side View
Table 56.0%Crown 36.5°Girdle: MediumPavilion 41°Culet: NoneDepth 63.0%

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: $1,463 NZD|Low: $548 NZD|High: $1,771 NZD|Avg: $956 NZD|-4.0%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 9$548 NZD
Retailer 4$608 NZD
Retailer 15$633 NZD
Retailer 16$649 NZD
Retailer 18$693 NZD
Retailer 5$763 NZD
Retailer 3$848 NZD
Retailer 7$848 NZD
Retailer 2$864 NZD
Retailer 8$866 NZD
Retailer 6$869 NZD
Retailer 11$938 NZD
Retailer 17$1,046 NZD
Retailer 13$1,133 NZD
Retailer 12$1,176 NZD
Retailer 10$1,214 NZD
Retailer 1$1,463 NZD
Retailer 14$1,676 NZD

27 data points across 18 retailers

23 retailers$608 NZD to $1,676 NZD

Retailer 1
-
$548 NZD
Price last confirmed 24 days ago
A
Retailer 2
-
$608 NZD
View
Final sale: no returns
A
Retailer 3
-
$633 NZD
View
A
Retailer 4
-
$649 NZD
View
A
Retailer 5
-
$693 NZD
View
Retailer 6
-
$750 NZD
View
Price last confirmed 29 days ago
A
Retailer 7
-
$763 NZD
View
Retailer 8
-
$796 NZD
View
Price last confirmed 38 days ago
Retailer 9
-
$808 NZD
View
Price last confirmed 26 days ago
A
Retailer 10
-
$848 NZD
View
A
Retailer 11
-
$848 NZD
View
A
Retailer 12
-
$864 NZD
View
A
Retailer 13
-
$866 NZD
View
Retailer 14
-
$868 NZD
View
Price last confirmed 29 days ago
A
Retailer 15
-
$869 NZD
View
A
Retailer 16
-
$938 NZD
View
B+
Retailer 17
-
$1,046 NZD
View
B+
Retailer 18
-
$1,133 NZD
View
B+
Retailer 19
-
$1,176 NZD
View
Retailer 20
-
$1,214 NZD
View
Price last confirmed 34 days ago
B+
Retailer 21
-
$1,463 NZD
View
B
Retailer 22
-
$1,676 NZD
View
Most Expensive
NZ Jewellers
abaaa04a-5641-4d75-8c7f-3340310c481b · Oct 8
$2,879 NZD
$1,596 USD
View
Price last confirmed 28 days ago
22 more retailers have this diamond
Prices start from $608 NZDSave up to $1,068 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
$608 NZD