Round|Natural|GIA

0.50ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2426873952

Certificate GIA 2426873952

Diamond specifications and retailer prices

From $310 USD
As of November 6, 2026
Save $676 USD (69%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,641 USD 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
Color
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: $310 USD|Low: $310 USD|High: $1,000 USD|Avg: $559 USD|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$310 USD
Retailer 6$408 USD
Retailer 4$435 USD
Retailer 7$461 USD
Retailer 2$523 USD
Retailer 3$685 USD
Retailer 5$986 USD

40 data points across 7 retailers

14 retailers$310 USD to $986 USD

A
Cheapest Retailer
-
$310 USD
A
Retailer 2
-
$358 USD
View
A
Retailer 3
-
$408 USD
View
Retailer 4
-
$428 USD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$435 USD
View
Retailer 6
-
$461 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$461 USD
View
Price last confirmed 9 days ago
Retailer 8
-
$494 USD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$523 USD
View
B+
Retailer 10
-
$559 USD
View
B+
Retailer 11
-
$566 USD
View
B
Retailer 12
-
$685 USD
View
B
Retailer 13
-
$986 USD
View
Most Expensive
NZ Jewellers
8c068304-13f5-428f-8918-5f76b859a47b · Oct 30
$1,641 USD
View
Price last confirmed 7 days ago
13 more retailers have this diamond
Prices start from $310 USDSave up to $676 USD

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
$310 USD