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Round|Natural|GIA

0.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 7566251787

Certificate GIA 7566251787

Diamond specifications and retailer prices

From $781 AUD
As of November 6, 2026
Save $609 AUD (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,391 AUD at NZ Jewellers · As of October 17, 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 7566251787. Listed at 16 retailers as of November 6, 2026, with a 78% 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 angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7566251787
Dimensions5.05 × 5.07 × 3.16 mm
L/W Ratio1.00
Culet sizeNone
Top View
5.05 mm5.07 mm0.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7566251787
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,391 AUD|Low: $619 AUD|High: $2,391 AUD|Avg: $1,002 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10$619 AUD
Retailer 11$671 AUD
Retailer 12$720 AUD
Retailer 9$786 AUD
Retailer 7$803 AUD
Retailer 5$906 AUD
Retailer 4$1,020 AUD
Retailer 6$1,097 AUD
Retailer 8$1,116 AUD
Retailer 2$1,146 AUD
Retailer 3$1,157 AUD
NZ Jewellers$2,391 AUD

39 data points across 12 retailers

16 retailers$781 AUD to $1,390 AUD

Retailer 1
-
$619 AUD
Price last confirmed 17 days ago
Retailer 2
-
$671 AUD
View
Price last confirmed 22 days ago
Retailer 3
-
$720 AUD
View
Price last confirmed 19 days ago
B+
Retailer 4
-
$781 AUD
View
B+
Retailer 5
-
$786 AUD
View
B+
Retailer 6
-
$803 AUD
View
B+
Retailer 7
-
$849 AUD
View
B+
Retailer 8
-
$906 AUD
View
B
Retailer 9
-
$1,016 AUD
View
B
Retailer 10
-
$1,093 AUD
View
B+
Retailer 11
-
$1,097 AUD
View
B
Retailer 12
-
$1,116 AUD
View
B
Retailer 13
-
$1,146 AUD
View
B+
Retailer 14
-
$1,157 AUD
View
B
Retailer 15
-
$1,390 AUD
View
Most Expensive
NZ Jewellers
3c0b1f97-823b-4849-bb47-92b2c3be0b21 · Oct 17
$2,391 AUD
$1,674 USD
View
Price last confirmed 20 days ago
15 more retailers have this diamond
Prices start from $781 AUDSave up to $609 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.

B+
0.50ct Round
$781 AUD