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Round|Natural|GIA

0.45ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1503101550

Certificate GIA 1503101550

Diamond specifications and retailer prices

From $337 AUD
As of November 6, 2026
Save $1,498 AUD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,836 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1503101550. Listed at 15 retailers as of November 4, 2026, with prices from $337 to $1,836, a $1,498 spread on the same certified stone. NZ Jewellers lists it at $1,836. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceMedium
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1503101550
Dimensions4.91 × 4.94 × 3.04 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Girdle conditionFaceted
Key to symbols
Crystal
Top View
4.91 mm4.94 mm0.45 ctJ / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1503101550
Side View
Table 60.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.6%

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: $337 AUD|Low: $337 AUD|High: $1,119 AUD|Avg: $686 AUD|-3.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 1$337 AUD
Retailer 6$567 AUD
Retailer 2$609 AUD
Retailer 3$643 AUD
Retailer 4$786 AUD
Retailer 5$1,106 AUD

41 data points across 6 retailers

15 retailers$337 AUD to $1,836 AUD

A
Cheapest Retailer
-
$337 AUD
A
Retailer 2
-
$479 AUD
View
Retailer 3
-
$516 AUD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$526 AUD
View
B+
Retailer 5
-
$533 AUD
View
B+
Retailer 6
-
$534 AUD
View
B+
Retailer 7
-
$567 AUD
View
B+
Retailer 8
-
$609 AUD
View
B+
Retailer 9
-
$643 AUD
View
B+
Retailer 10
-
$644 AUD
View
B+
Retailer 11
-
$703 AUD
View
B+
Retailer 12
-
$756 AUD
View
B+
Retailer 13
-
$786 AUD
View
B
Retailer 14
-
$1,106 AUD
View
Most Expensive
C
NZ Jewellers
40551fbb-139f-461a-9534-dc504a8d4965 · Nov 4
$1,836 AUD
$1,285 USD
View
14 more retailers have this diamond
Prices start from $337 AUDSave up to $1,498 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
$337 AUD