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Round|Natural|GIA

0.50ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1559976651

Certificate GIA 1559976651

Diamond specifications and retailer prices

From $578 AUD
As of November 6, 2026
Save $1,182 AUD (67%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,513 AUD at NZ Jewellers · As of September 5, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559976651. Listed at 22 retailers as of November 2, 2026, with a 205% 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1559976651
Dimensions5.08 × 5.05 × 3.16 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
5.08 mm5.05 mm0.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559976651
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NDepth 62.4%

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: $2,409 AUD|Low: $578 AUD|High: $2,595 AUD|Avg: $1,027 AUD|-7.2%
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
November 6, 2026
Retailer 2$578 AUD
Retailer 3$668 AUD
Retailer 4$669 AUD
Retailer 13$702 AUD
Retailer 6$768 AUD
Retailer 5$827 AUD
Retailer 8$828 AUD
Retailer 9$886 AUD
Retailer 10$940 AUD
Retailer 14$943 AUD
Retailer 15$998 AUD
Retailer 7$1,055 AUD
Retailer 12$1,060 AUD
Retailer 16$1,065 AUD
Retailer 11$1,180 AUD
Retailer 17$1,760 AUD
NZ Jewellers$2,409 AUD

28 data points across 17 retailers

22 retailers$578 AUD to $1,760 AUD

A
Cheapest Retailer
-
$578 AUD
A
Retailer 2
-
$668 AUD
View
A
Retailer 3
-
$669 AUD
View
A
Retailer 4
-
$702 AUD
View
Final sale: no returns
Retailer 5
-
$768 AUD
View
Price last confirmed 15 days ago
Retailer 6
-
$802 AUD
View
Price last confirmed 62 days ago
Retailer 7
-
$827 AUD
View
Price last confirmed 15 days ago
Retailer 8
-
$828 AUD
View
Price last confirmed 11 days ago
Retailer 9
-
$863 AUD
View
Price last confirmed 22 days ago
Retailer 10
-
$886 AUD
View
Price last confirmed 14 days ago
Retailer 11
-
$924 AUD
View
Price last confirmed 60 days ago
B+
Retailer 12
-
$940 AUD
View
B+
Retailer 13
-
$943 AUD
View
B+
Retailer 14
-
$998 AUD
View
B
Retailer 15
-
$1,055 AUD
View
B
Retailer 16
-
$1,060 AUD
View
B
Retailer 17
-
$1,065 AUD
View
B
Retailer 18
-
$1,180 AUD
View
Retailer 19
-
$1,253 AUD
View
Price last confirmed 33 days ago
B
Retailer 20
-
$1,760 AUD
View
Retailer 21
-
$2,409 AUD
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
c0e33174-c76c-4a9c-a336-f0e9114aaca6 · Sep 5
$2,513 AUD
$1,727 USD
View
Price last confirmed 61 days ago
21 more retailers have this diamond
Prices start from $578 AUDSave up to $1,182 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
$578 AUD