Round|Natural|GIA

0.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6505375298

Certificate GIA 6505375298

Diamond specifications and retailer prices

From $411 USD
As of November 5, 2026
Save $1,348 USD (77%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,759 USD 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 $411 to $1,759, a $1,348 spread on the same certified stone. NZ Jewellers lists it at $1,759. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,759 USD|Low: $411 USD|High: $1,759 USD|Avg: $891 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3$411 USD
Retailer 7$565 USD
Retailer 2$584 USD
Retailer 5$677 USD
Retailer 4$750 USD
Retailer 9$755 USD
Retailer 6$865 USD
Retailer 8$1,294 USD
NZ Jewellers$1,759 USD

38 data points across 9 retailers

19 retailers$411 USD to $1,759 USD

A
Cheapest Retailer
-
$411 USD
B+
Retailer 2
-
$531 USD
View
B+
Retailer 3
-
$561 USD
View
Retailer 4
-
$561 USD
View
Price last confirmed 43 days ago
B+
Retailer 5
-
$565 USD
View
B+
Retailer 6
-
$584 USD
View
Retailer 7
-
$604 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$604 USD
View
B+
Retailer 9
-
$647 USD
View
Retailer 10
-
$647 USD
View
Price last confirmed 45 days ago
B+
Retailer 11
-
$677 USD
View
B
Retailer 12
-
$692 USD
View
B
Retailer 13
-
$736 USD
View
B+
Retailer 14
-
$750 USD
View
B
Retailer 15
-
$755 USD
View
B
Retailer 16
-
$865 USD
View
B
Retailer 17
-
$1,294 USD
View
Retailer 18
-
$1,759 USD
View
Price last confirmed 43 days ago
Most Expensive
B
NZ Jewellers
405abf71-43c0-4f79-85d8-3369ef7c483a · Nov 4
$1,759 USD
View
18 more retailers have this diamond
Prices start from $411 USDSave up to $1,348 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
$411 USD