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Round|Natural|GIA

0.50ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2426873952

Certificate GIA 2426873952

Diamond specifications and retailer prices

From $443 AUD
As of November 6, 2026
Save $966 AUD (69%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,344 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.5ct natural round diamond

This 0.5ct natural round sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2426873952. Listed at 14 retailers as of November 4, 2026, with a 218% 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

0.50
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2426873952
Dimensions5.07 × 5.05 × 3.14 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
5.07 mm5.05 mm0.50 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2426873952
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.1%

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: $443 AUD|Low: $443 AUD|High: $1,429 AUD|Avg: $798 AUD|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$443 AUD
Retailer 6$583 AUD
Retailer 4$621 AUD
Retailer 7$659 AUD
Retailer 2$747 AUD
Retailer 3$979 AUD
Retailer 5$1,409 AUD

40 data points across 7 retailers

14 retailers$443 AUD to $1,409 AUD

A
Cheapest Retailer
-
$443 AUD
A
Retailer 2
-
$511 AUD
View
A
Retailer 3
-
$583 AUD
View
Retailer 4
-
$611 AUD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$621 AUD
View
Retailer 6
-
$659 AUD
View
Price last confirmed 8 days ago
Retailer 7
-
$659 AUD
View
Price last confirmed 9 days ago
Retailer 8
-
$706 AUD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$747 AUD
View
B+
Retailer 10
-
$799 AUD
View
B+
Retailer 11
-
$809 AUD
View
B
Retailer 12
-
$979 AUD
View
B
Retailer 13
-
$1,409 AUD
View
Most Expensive
NZ Jewellers
8c068304-13f5-428f-8918-5f76b859a47b · Oct 30
$2,344 AUD
$1,641 USD
View
Price last confirmed 7 days ago
13 more retailers have this diamond
Prices start from $443 AUDSave up to $966 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
0.50ct Round
$443 AUD