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Round|Natural|IGI

0.51ct K VS1 Round Natural Diamond

EX • K/VS1 • IGI 508117087

Shape and cutting style on the report: Round brilliant

Certificate IGI 508117087

Diamond specifications and retailer prices

From €297 EUR
As of November 6, 2026
Save €1,264 EUR (81%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €1,561 EUR at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded K colour (faint-tinted) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI 508117087. Listed at 21 retailers as of November 4, 2026, with a 426% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
K
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.6°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 508117087
Dimensions5.14 × 5.11 × 3.18 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
5.14 mm5.11 mm0.51 ctK / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 508117087
Side View
Table 57.5%Crown 34.6°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.0%

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 6
Current: €1,561 EUR|Low: €297 EUR|High: €1,561 EUR|Avg: €750 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2€297 EUR
Retailer 10€438 EUR
Retailer 6€519 EUR
Retailer 5€520 EUR
Retailer 11€543 EUR
Retailer 4€581 EUR
Retailer 8€592 EUR
Retailer 7€631 EUR
Retailer 9€939 EUR
Retailer 3€1,198 EUR
NZ Jewellers€1,561 EUR

38 data points across 11 retailers

21 retailers€297 EUR to €1,561 EUR

A
Cheapest Retailer
-
€297 EUR
Retailer 2
-
€407 EUR
View
Price last confirmed 44 days ago
Retailer 3
-
€407 EUR
View
Price last confirmed 17 days ago
Retailer 4
-
€423 EUR
View
Price last confirmed 30 days ago
Retailer 5
-
€438 EUR
View
Price last confirmed 8 days ago
Retailer 6
-
€470 EUR
View
Price last confirmed 45 days ago
A
Retailer 7
-
€470 EUR
View
A
Retailer 8
-
€470 EUR
View
B+
Retailer 9
-
€519 EUR
View
B+
Retailer 10
-
€520 EUR
View
B+
Retailer 11
-
€524 EUR
View
B+
Retailer 12
-
€543 EUR
View
B+
Retailer 13
-
€581 EUR
View
B+
Retailer 14
-
€592 EUR
View
B+
Retailer 15
-
€631 EUR
View
B
Retailer 16
-
€939 EUR
View
Retailer 17
-
€1,198 EUR
View
Price last confirmed 16 days ago
Retailer 18
-
€1,293 EUR
View
Price last confirmed 15 days ago
B
Retailer 19
-
€1,561 EUR
View
Retailer 20
-
€1,561 EUR
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
c9809af7-3e34-415e-ba69-30e5413ca627 · Oct 20
€1,561 EUR
$1,752 USD
View
Price last confirmed 17 days ago
20 more retailers have this diamond
Prices start from €297 EURSave up to €1,264 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
0.51ct Round
€297 EUR