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Round|Natural|GIA

0.45ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2566515261

Certificate GIA 2566515261

Diamond specifications and retailer prices

From $394 AUD
As of November 6, 2026
Save $1,677 AUD (81%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,071 AUD at NZ Jewellers · As of November 4, 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 2566515261. Listed at 20 retailers as of November 4, 2026, with prices from $394 to $2,071, a $1,677 spread on the same certified stone. NZ Jewellers lists it at $2,071. 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
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2566515261
Dimensions4.91 × 4.93 × 3.04 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Feather
Top View
4.91 mm4.93 mm0.45 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566515261
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.7%

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: $2,071 AUD|Low: $394 AUD|High: $2,116 AUD|Avg: $799 AUD|-2.1%
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
Retailer 18
Retailer 19
November 6, 2026
Retailer 12$394 AUD
Retailer 4$466 AUD
Retailer 11$522 AUD
Retailer 19$540 AUD
Retailer 15$581 AUD
Retailer 10$595 AUD
Retailer 2$608 AUD
Retailer 18$693 AUD
Retailer 17$710 AUD
Retailer 7$728 AUD
Retailer 14$731 AUD
Retailer 5$779 AUD
Retailer 9$825 AUD
Retailer 3$841 AUD
Retailer 8$859 AUD
Retailer 16$901 AUD
Retailer 13$1,087 AUD
Retailer 6$1,244 AUD
NZ Jewellers$2,071 AUD

19 data points across 19 retailers

20 retailers$394 AUD to $2,071 AUD

A
Cheapest Retailer
-
$394 AUD
A
Retailer 2
-
$466 AUD
View
A
Retailer 3
-
$522 AUD
View
A
Retailer 4
-
$540 AUD
View
A
Retailer 5
-
$581 AUD
View
Retailer 6
-
$595 AUD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$608 AUD
View
A
Retailer 8
-
$616 AUD
View
B+
Retailer 9
-
$693 AUD
View
B+
Retailer 10
-
$710 AUD
View
B+
Retailer 11
-
$728 AUD
View
B+
Retailer 12
-
$731 AUD
View
B+
Retailer 13
-
$779 AUD
View
B+
Retailer 14
-
$825 AUD
View
B+
Retailer 15
-
$841 AUD
View
B+
Retailer 16
-
$859 AUD
View
B+
Retailer 17
-
$901 AUD
View
B
Retailer 18
-
$1,087 AUD
View
B
Retailer 19
-
$1,244 AUD
View
Most Expensive
B
NZ Jewellers
0a2bfe8e-fc94-4022-b8e1-13fced6c462f · Nov 4
$2,071 AUD
$1,423 USD
View
19 more retailers have this diamond
Prices start from $394 AUDSave up to $1,677 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
$394 AUD