Round|Natural|GIA

0.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6505375298

Certificate GIA 6505375298

Diamond specifications and retailer prices

From €366 EUR
As of November 5, 2026
Save €1,201 EUR (77%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €1,567 EUR 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 €366 to €1,567, a €1,201 spread on the same certified stone. NZ Jewellers lists it at €1,567. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: €1,567 EUR|Low: €366 EUR|High: €1,567 EUR|Avg: €794 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3€366 EUR
Retailer 7€503 EUR
Retailer 2€520 EUR
Retailer 5€603 EUR
Retailer 4€668 EUR
Retailer 9€673 EUR
Retailer 6€771 EUR
Retailer 8€1,153 EUR
NZ Jewellers€1,567 EUR

38 data points across 9 retailers

19 retailers€366 EUR to €1,567 EUR

A
Cheapest Retailer
-
€366 EUR
B+
Retailer 2
-
€473 EUR
View
B+
Retailer 3
-
€500 EUR
View
Retailer 4
-
€500 EUR
View
Price last confirmed 43 days ago
B+
Retailer 5
-
€503 EUR
View
B+
Retailer 6
-
€520 EUR
View
Retailer 7
-
€538 EUR
View
Price last confirmed 8 days ago
B+
Retailer 8
-
€538 EUR
View
B+
Retailer 9
-
€576 EUR
View
Retailer 10
-
€576 EUR
View
Price last confirmed 45 days ago
B+
Retailer 11
-
€603 EUR
View
B
Retailer 12
-
€617 EUR
View
B
Retailer 13
-
€656 EUR
View
B+
Retailer 14
-
€668 EUR
View
B
Retailer 15
-
€673 EUR
View
B
Retailer 16
-
€771 EUR
View
B
Retailer 17
-
€1,153 EUR
View
Retailer 18
-
€1,567 EUR
View
Price last confirmed 43 days ago
Most Expensive
B
NZ Jewellers
405abf71-43c0-4f79-85d8-3369ef7c483a · Nov 4
€1,567 EUR
$1,759 USD
View
18 more retailers have this diamond
Prices start from €366 EURSave up to €1,201 EUR

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
€366 EUR