Round|Natural|GIA

0.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6285544026

Certificate GIA 6285544026

Diamond specifications and retailer prices

From $586 AUD
As of November 5, 2026
Save $1,257 AUD (68%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,507 AUD at NZ Jewellers · As of October 23, 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 6285544026. Listed at 19 retailers as of November 4, 2026, with a 215% 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6285544026
Dimensions5.11 × 5.09 × 3.13 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
5.11 mm5.09 mm0.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6285544026
Side View
Table 59.0%Crown 35°Girdle: STK-VTKPavilion 41°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,071 AUD|Low: $586 AUD|High: $1,868 AUD|Avg: $1,088 AUD|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 3$586 AUD
Retailer 6$800 AUD
Retailer 4$964 AUD
Retailer 2$997 AUD
Retailer 1$1,071 AUD
Retailer 5$1,233 AUD
Retailer 7$1,843 AUD

37 data points across 7 retailers

19 retailers$586 AUD to $1,843 AUD

A
Cheapest Retailer
-
$586 AUD
B+
Retailer 2
-
$756 AUD
View
B+
Retailer 3
-
$800 AUD
View
Retailer 4
-
$800 AUD
View
Price last confirmed 50 days ago
Retailer 5
-
$800 AUD
View
Price last confirmed 15 days ago
Retailer 6
-
$861 AUD
View
Price last confirmed 15 days ago
Retailer 7
-
$861 AUD
View
Price last confirmed 14 days ago
Retailer 8
-
$923 AUD
View
Price last confirmed 14 days ago
Retailer 9
-
$923 AUD
View
Price last confirmed 45 days ago
B+
Retailer 10
-
$964 AUD
View
B
Retailer 11
-
$966 AUD
View
B
Retailer 12
-
$987 AUD
View
B
Retailer 13
-
$997 AUD
View
B+
Retailer 14
-
$1,071 AUD
View
B
Retailer 15
-
$1,079 AUD
View
B
Retailer 16
-
$1,233 AUD
View
B
Retailer 17
-
$1,843 AUD
View
Retailer 18
-
$2,507 AUD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
5a5fa188-79ae-45ca-b5c0-850aff818475 · Oct 23
$2,507 AUD
$1,755 USD
View
Price last confirmed 14 days ago
18 more retailers have this diamond
Prices start from $586 AUDSave up to $1,257 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
$586 AUD