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Round|Natural|GIA

0.45ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1459070089

Certificate GIA 1459070089

Diamond specifications and retailer prices

From $284 AUD
As of November 6, 2026
Save $1,501 AUD (84%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,828 AUD 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1459070089. Listed at 22 retailers as of November 4, 2026, with a 529% 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1459070089
Dimensions4.89 × 4.84 × 3.07 mm
L/W Ratio1.01
Star length45%
Lower girdle75%
Girdle conditionFaceted
Key to symbols
Crystal, Cloud
Top View
4.89 mm4.84 mm0.45 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1459070089
Side View
Table 55.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.2%

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: $1,784 AUD|Low: $284 AUD|High: $1,877 AUD|Avg: $610 AUD|-3.8%
NZ Jewellers
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
November 6, 2026
Retailer 11$284 AUD
Retailer 8$354 AUD
Retailer 17$394 AUD
Retailer 13$432 AUD
Retailer 9$447 AUD
Retailer 10$460 AUD
Retailer 2$472 AUD
Retailer 6$477 AUD
Retailer 16$490 AUD
Retailer 5$530 AUD
Retailer 15$555 AUD
Retailer 12$582 AUD
Retailer 3$613 AUD
Retailer 14$685 AUD
Retailer 7$728 AUD
Retailer 4$907 AUD
NZ Jewellers$1,784 AUD

18 data points across 17 retailers

22 retailers$284 AUD to $1,784 AUD

A
Cheapest Retailer
-
$284 AUD
A
Retailer 2
-
$354 AUD
View
A
Retailer 3
-
$394 AUD
View
A
Retailer 4
-
$432 AUD
View
Retailer 5
-
$447 AUD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$460 AUD
View
A
Retailer 7
-
$472 AUD
View
A
Retailer 8
-
$477 AUD
View
A
Retailer 9
-
$490 AUD
View
Retailer 10
-
$527 AUD
View
Price last confirmed 38 days ago
A
Retailer 11
-
$530 AUD
View
Retailer 12
-
$531 AUD
View
Price last confirmed 51 days ago
A
Retailer 13
-
$555 AUD
View
A
Retailer 14
-
$582 AUD
View
A
Retailer 15
-
$613 AUD
View
Retailer 16
-
$636 AUD
View
Price last confirmed 38 days ago
B+
Retailer 17
-
$685 AUD
View
B+
Retailer 18
-
$728 AUD
View
Retailer 19
-
$750 AUD
View
Price last confirmed 38 days ago
B+
Retailer 20
-
$907 AUD
View
B
Retailer 21
-
$1,784 AUD
View
Most Expensive
NZ Jewellers
1bccaf41-e474-481f-b7e3-ae63fd9220d0 · Sep 28
$1,828 AUD
$1,256 USD
View
Price last confirmed 39 days ago
21 more retailers have this diamond
Prices start from $284 AUDSave up to $1,501 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
$284 AUD