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Radiant|Natural|GIA

0.50ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 5466088159

Certificate GIA 5466088159

Diamond specifications and retailer prices

From $635 AUD
$445 USD
As of November 2, 2026
Save $954 AUD (60%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,638 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.5ct natural radiant diamond

This 0.5ct natural radiant sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5466088159. Listed at 12 retailers as of November 2, 2026, with a 150% 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5466088159
Dimensions5.35 × 3.99 × 2.79 mm
L/W Ratio1.34
Top View
5.35 mm3.99 mm0.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5466088159
Side View
Table 72.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.9%

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 2
Current: $2,638 AUD|Low: $635 AUD|High: $2,638 AUD|Avg: $1,055 AUD
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
November 2, 2026
Retailer 4$635 AUD
Retailer 12$689 AUD
Retailer 10$742 AUD
Retailer 13$742 AUD
Retailer 11$795 AUD
Retailer 6$845 AUD
Retailer 7$860 AUD
Retailer 3$977 AUD
Retailer 8$1,035 AUD
Retailer 9$1,063 AUD
Retailer 5$1,191 AUD
Retailer 2$1,589 AUD
NZ Jewellers$2,638 AUD

13 data points across 13 retailers

12 retailers$635 AUD to $1,589 AUD

A
Cheapest Retailer
-
$635 AUD
$445 USD
Final sale: no returns
A
Retailer 2
-
$689 AUD
$483 USD
View
B+
Retailer 3
-
$742 AUD
$520 USD
View
B+
Retailer 4
-
$742 AUD
$520 USD
View
B+
Retailer 5
-
$795 AUD
$557 USD
View
B+
Retailer 6
-
$845 AUD
£466 GBP
View
B+
Retailer 7
-
$860 AUD
£474 GBP
View
B
Retailer 8
-
$977 AUD
$685 USD
View
B+
Retailer 9
-
$1,035 AUD
€691 EUR
View
B+
Retailer 10
-
$1,063 AUD
ZAR 12,031 ZAR
View
B
Retailer 11
-
$1,589 AUD
£877 GBP
View
Most Expensive
NZ Jewellers
39296fe8-26ef-477e-ae4f-d860ddb17ad4 · Oct 30
$2,638 AUD
$1,849 USD
View
Price under review
11 more retailers have this diamond
Prices start from $635 AUDSave up to $954 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 Radiant
$635 AUD