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Round|Natural|GIA

0.45ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6552276477

Certificate GIA 6552276477

Diamond specifications and retailer prices

From $309 AUD
As of November 6, 2026
Save $687 AUD (69%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,984 AUD at NZ Jewellers · As of September 21, 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 6552276477. Listed at 17 retailers as of November 2, 2026, with a 223% 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
SymmetryExcellent
FluorescenceMedium
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6552276477
Dimensions4.91 × 4.87 × 3.07 mm
L/W Ratio1.01
Key to symbols
Feather, Twinning Wisp
Top View
4.91 mm4.87 mm0.45 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6552276477
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.8%

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: $499 AUD|Low: $309 AUD|High: $1,038 AUD|Avg: $630 AUD|-2.8%
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
November 6, 2026
Retailer 8$309 AUD
Retailer 12$333 AUD
Retailer 2$373 AUD
Retailer 1$499 AUD
Retailer 6$499 AUD
Retailer 3$509 AUD
Retailer 10$537 AUD
Retailer 7$591 AUD
Retailer 13$665 AUD
Retailer 11$736 AUD
Retailer 4$757 AUD
Retailer 9$860 AUD
Retailer 5$995 AUD

19 data points across 13 retailers

17 retailers$309 AUD to $995 AUD

A
Cheapest Retailer
-
$309 AUD
A
Retailer 2
-
$333 AUD
View
A
Retailer 3
-
$373 AUD
View
A
Retailer 4
-
$499 AUD
View
A
Retailer 5
-
$499 AUD
View
A
Retailer 6
-
$509 AUD
View
Retailer 7
-
$518 AUD
View
Price last confirmed 50 days ago
A
Retailer 8
-
$537 AUD
View
A
Retailer 9
-
$591 AUD
View
B+
Retailer 10
-
$665 AUD
View
Retailer 11
-
$697 AUD
View
Price last confirmed 45 days ago
B+
Retailer 12
-
$736 AUD
View
B+
Retailer 13
-
$757 AUD
View
Retailer 14
-
$830 AUD
View
Price last confirmed 35 days ago
B+
Retailer 15
-
$860 AUD
View
B+
Retailer 16
-
$995 AUD
View
Most Expensive
NZ Jewellers
9784c380-1b50-44cc-b081-f8013fd6a1e7 · Sep 21
$1,984 AUD
$1,363 USD
View
Price last confirmed 46 days ago
16 more retailers have this diamond
Prices start from $309 AUDSave up to $687 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
$309 AUD