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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 $490 AUD
As of November 6, 2026
Save $862 AUD (64%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,323 AUD 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: $1,180 AUD|Low: $442 AUD|High: $1,429 AUD|Avg: $771 AUD|-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$442 AUD
Retailer 4$490 AUD
Retailer 15$511 AUD
Retailer 16$524 AUD
Retailer 18$559 AUD
Retailer 5$616 AUD
Retailer 3$684 AUD
Retailer 7$684 AUD
Retailer 2$697 AUD
Retailer 8$699 AUD
Retailer 6$702 AUD
Retailer 11$757 AUD
Retailer 17$844 AUD
Retailer 13$914 AUD
Retailer 12$949 AUD
Retailer 10$979 AUD
Retailer 1$1,180 AUD
Retailer 14$1,352 AUD

27 data points across 18 retailers

23 retailers$490 AUD to $1,352 AUD

Retailer 1
-
$442 AUD
Price last confirmed 24 days ago
A
Retailer 2
-
$490 AUD
View
Final sale: no returns
A
Retailer 3
-
$511 AUD
View
A
Retailer 4
-
$524 AUD
View
A
Retailer 5
-
$559 AUD
View
Retailer 6
-
$605 AUD
View
Price last confirmed 29 days ago
A
Retailer 7
-
$616 AUD
View
Retailer 8
-
$642 AUD
View
Price last confirmed 38 days ago
Retailer 9
-
$652 AUD
View
Price last confirmed 26 days ago
A
Retailer 10
-
$684 AUD
View
A
Retailer 11
-
$684 AUD
View
A
Retailer 12
-
$697 AUD
View
A
Retailer 13
-
$699 AUD
View
Retailer 14
-
$700 AUD
View
Price last confirmed 29 days ago
A
Retailer 15
-
$702 AUD
View
A
Retailer 16
-
$757 AUD
View
B+
Retailer 17
-
$844 AUD
View
B+
Retailer 18
-
$914 AUD
View
B+
Retailer 19
-
$949 AUD
View
Retailer 20
-
$979 AUD
View
Price last confirmed 34 days ago
B+
Retailer 21
-
$1,180 AUD
View
B
Retailer 22
-
$1,352 AUD
View
Most Expensive
NZ Jewellers
abaaa04a-5641-4d75-8c7f-3340310c481b · Oct 8
$2,323 AUD
$1,596 USD
View
Price last confirmed 28 days ago
22 more retailers have this diamond
Prices start from $490 AUDSave up to $862 AUD

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
$490 AUD