CaratHunter
Plans
Round|Natural|GIA

0.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6505375298

Certificate GIA 6505375298

Diamond specifications and retailer prices

From $587 AUD
As of November 5, 2026
Save $1,926 AUD (77%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,513 AUD at NZ Jewellers · As of November 4, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6505375298. Listed at 19 retailers as of November 4, 2026, with prices from $587 to $2,513, a $1,926 spread on the same certified stone. NZ Jewellers lists it at $2,513. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6505375298
Dimensions5.08 × 5.06 × 3.17 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
5.08 mm5.06 mm0.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6505375298
Side View
Table 57.0%Crown 35°Girdle: THN-STKPavilion 41.4°Culet: NoneDepth 62.5%

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 5
Current: $2,513 AUD|Low: $587 AUD|High: $2,513 AUD|Avg: $1,273 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3$587 AUD
Retailer 7$807 AUD
Retailer 2$834 AUD
Retailer 5$967 AUD
Retailer 4$1,071 AUD
Retailer 9$1,079 AUD
Retailer 6$1,236 AUD
Retailer 8$1,848 AUD
NZ Jewellers$2,513 AUD

38 data points across 9 retailers

19 retailers$587 AUD to $2,513 AUD

A
Cheapest Retailer
-
$587 AUD
B+
Retailer 2
-
$759 AUD
View
B+
Retailer 3
-
$801 AUD
View
Retailer 4
-
$801 AUD
View
Price last confirmed 43 days ago
B+
Retailer 5
-
$807 AUD
View
B+
Retailer 6
-
$834 AUD
View
Retailer 7
-
$863 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$863 AUD
View
B+
Retailer 9
-
$924 AUD
View
Retailer 10
-
$924 AUD
View
Price last confirmed 45 days ago
B+
Retailer 11
-
$967 AUD
View
B
Retailer 12
-
$989 AUD
View
B
Retailer 13
-
$1,051 AUD
View
B+
Retailer 14
-
$1,071 AUD
View
B
Retailer 15
-
$1,079 AUD
View
B
Retailer 16
-
$1,236 AUD
View
B
Retailer 17
-
$1,848 AUD
View
Retailer 18
-
$2,513 AUD
View
Price last confirmed 43 days ago
Most Expensive
B
NZ Jewellers
405abf71-43c0-4f79-85d8-3369ef7c483a · Nov 4
$2,513 AUD
$1,759 USD
View
18 more retailers have this diamond
Prices start from $587 AUDSave up to $1,926 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
$587 AUD