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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 $559 NZD
As of November 6, 2026
Save $1,219 NZD (69%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,960 NZD 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: $559 NZD|Low: $559 NZD|High: $1,804 NZD|Avg: $1,008 NZD|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$559 NZD
Retailer 6$736 NZD
Retailer 4$785 NZD
Retailer 7$832 NZD
Retailer 2$943 NZD
Retailer 3$1,236 NZD
Retailer 5$1,779 NZD

40 data points across 7 retailers

14 retailers$559 NZD to $1,779 NZD

A
Cheapest Retailer
-
$559 NZD
A
Retailer 2
-
$646 NZD
View
A
Retailer 3
-
$736 NZD
View
Retailer 4
-
$772 NZD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$785 NZD
View
Retailer 6
-
$832 NZD
View
Price last confirmed 8 days ago
Retailer 7
-
$832 NZD
View
Price last confirmed 9 days ago
Retailer 8
-
$891 NZD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$943 NZD
View
B+
Retailer 10
-
$1,008 NZD
View
B+
Retailer 11
-
$1,021 NZD
View
B
Retailer 12
-
$1,236 NZD
View
B
Retailer 13
-
$1,779 NZD
View
Most Expensive
NZ Jewellers
8c068304-13f5-428f-8918-5f76b859a47b · Oct 30
$2,960 NZD
$1,641 USD
View
Price last confirmed 7 days ago
13 more retailers have this diamond
Prices start from $559 NZDSave up to $1,219 NZD

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
$559 NZD